Ergonomic office chairs test | comparison | desk chairs | back-friendly | price | 2025

Ergonomic office chairs - test & comparison of the best desk chairs 2025

Ergonomic office chairs put to the test - we compare the best back-friendly desk chairs for you. Find out everything you need to know about prices, quality, experiences and much more about ergonomic office chairs at a glance! Back pain is the undisputed number 1 widespread disease in Germany. Around 18 million people in Germany suffer acute or chronic back pain. So the likelihood that you too will be affected one day is not at all small. There are many different causes for this. However, it is mainly sitting a lot that causes back pain in the long term. To help prevent back pain, we present various ergonomic office chair models and their benefits below.

Back-friendly & healthy office chairs

If you sit at your desk for long periods of time every day, an ergonomic office chair is definitely an advantage to alleviate back pain or, in the best case, even prevent it in the first place. There are various features that such an ergonomic office chair should have in order to achieve the best possible effect for good back health. In general, the office chair should be ergonomically designed in accordance with DIN standard EN1335. In most cases, the models declared as ergonomic office chairs meet this standard.

First and foremost, the chair should have an ergonomically shaped backrest. This allows the spine to be supported precisely. If the backrest is also sufficiently high, it provides the best possible support for the entire back and helps to relieve pressure on the cervical spine. The height of the chair should also be adjustable so that it can be adapted to the length of the lower legs. Your chair is at the optimum height when the angle between the upper and lower legs is at least 90°, while the feet are fully on the floor. This ensures that different people can sit on the chair. It is also advantageous if the seat depth of the chair can be adjusted so that the seat surface can be optimally adapted to the thigh length of the person sitting on it. To ensure that the blood flow is not interrupted, the distance between the front edge of the seat and the hollow of the knee should be around two to three centimetres.

Relaxed at the workplace with an ergonomic office chair

The majority of the body weight is carried by the lumbar spine. This is why back pain occurs most frequently in this area. An ergonomic office chair should therefore have a lumbar support. This makes it possible to support the lower back area. It is ideal if it can be adjusted in height and the pressure on the back can be fine-tuned. This means that the lower back is in permanent contact with the backrest, stabilizing and relieving it over a long period of time and enabling an ergonomically correct posture. An office chair is also particularly easy on the back if it has armrests that are adjustable in height, width and depth. Resting your arms on the armrests relieves the strain on your shoulders and neck. They are also helpful when getting up and sitting down if you can lean on them. Some office chairs even have armrests with a swivel function that can move the supports inwards and outwards, providing even better support for the natural curve of the forearm.

To be able to react to different work situations, there is a rocking function. This allows you to tilt the backrest backwards in a range of around 90° and 120°. The type of tilt can also be controlled on higher quality models. If you set the tilt resistance and the tilt limiter correctly, the natural change of sitting position is encouraged. The chair follows the user's movements, so to speak. This is also known as dynamic sitting. A headrest can provide relief for the head, neck and shoulder area. It helps to relax the upper back area and achieve a more comfortable sitting posture without having to bend forwards spasmodically. This is because we tend to bend forward constantly, especially when working at a computer screen for long periods. However, headrests are not an absolute must. Back-friendly office chairs are often built without such a headrest, as the main function is to support the lumbar region. The DIN standard does not require a headrest for ergonomic office chairs.
An important feature of back-friendly office chairs is the synchronous mechanism. The chair reacts to the user's movements and thus provides optimum support. The chair adapts to you, not the other way around. When you lean back, you will notice that the backrest moves slightly further back than the seat. This increases the opening angle, which in turn leads to different muscles being alternately strained and relieved. In this way, the office chair follows the body's natural urge to move. As you alternate between the front, middle and rear sitting positions, active-dynamic sitting is encouraged. This permanent support for a productive working posture means that symptoms of fatigue occur much more slowly.

 By the way: This adaptation to the user's movements is what characterizes ergonomics. Ergonomics is the optimal mutual adaptation between people and their working conditions. Orthopaedics, on the other hand, is the science of identifying and treating congenital or acquired defects in the human musculoskeletal system.

Optional features such as deep suspension or a high load-bearing capacity are also available for an office chair. The depth suspension ensures that compression and bruising of the intervertebral discs is prevented by protecting the back from painful jolts when sitting down. People with a higher body weight should make sure that the chair has sufficient load-bearing capacity. Such chairs also offer a little more space and freedom of movement.

An overview of the features of ergonomic Bürost chairs

Orthopaedic chair recommendations

In general, the recommendations and requirements for an ergonomic office chair are very similar. They should have the features that have already been described in more detail in the previous section. The basic requirement is an adjustable seat height. This makes it possible for the chair to be used by different people. It is also much healthier if the height of the chair is adapted to the user's body size. Furthermore, the backrest should be adjusted as closely as possible to the user's body size and ideally be height-adjustable. To protect against back pain, the backrest should reach at least the height of the shoulder. As people differ in the length of their legs, an ergonomic chair ensures that the seat depth can be adjusted. An ergonomic office chair is also characterized by the individual adjustment of the seat tilt and armrests. Both features ensure a healthy and comfortable posture when sitting.

In addition, the backrest is sprung. The backrest should provide support for the back and give it adequate force when leaning against it. The backrest spring force can often be adjusted manually. When leaning back, the seat surface should barely rise. The seat surface must therefore have a certain degree of stability. If you spend a long time on your office chair every day, comfort must not be neglected either. The office chair should therefore have comfortable and hard-wearing upholstery. This ensures optimum pressure distribution and prevents persistent discomfort. A water vapor-permeable fabric also prevents sweating.

Not only ergonomic, but also visually an eye-catcher

All these features enable dynamic sitting, which is the main characteristic of the ergonomic office chair. The ergonomic office chair adjusts to the natural movements of the back and follows these movements. This means that the chair adapts to the user and not the other way around. By adapting to the natural movement sequences, a continuous dynamic is created. This is known as dynamic sitting. The constant movement prevents the user from adopting a rigid resting position. This constant posture is usually the cause of back pain. The interaction of these functions with the correct sitting position achieves the greatest effect. Orthopaedists recommend using the entire seat surface right up to the backrest. The upper and lower arms should form at least a right angle when the forearms are placed on the desk. If your feet are not resting on the floor in this sitting position, it is advisable to use a footrest. If you place your feet on the chair's swivel base too often, this leads to an incorrect sitting posture. Swollen legs or pain can be the result. In addition, the space under the desk should offer enough freedom of movement.

Desk chairs & office swivel chairs in the test

Whether at work, in the home office or in the children's room: you usually spend a long time on office chairs every day. To make working on these chairs as comfortable and healthy as possible, they should meet certain requirements. Find out below what these requirements are and what special features there are for rostühlen.

Orthopädische Bürostühle in the test

Orthop mobile office furniture should fulfill a range of functions to make everyday work as pleasant as possible. First of all, it is important that the seat height of the chair can be adjusted. This is a kind of basic requirement. If your feet are on the floor and your knees form at least a 90° angle, you have adjusted the height of the chair perfectly. The backrest should also be adjusted as closely as possible to the user's body height. Back pain can be avoided if the backrest reaches at least the height of the shoulders. It is also important to set the correct seat depth. The distance between the front edge of the seat and the back of the knees should be around two to three centimeters. Postural problems can also be avoided by adjusting the seat angle individually. Another feature of orthopaedic office chairs is the adjustability of the armrests. They should be adjusted so that you do not feel constricted when working. The suspension of the backrest helps to ensure that the back is supported and that adequate force is applied when leaning against it. The seat surface should also be very stable and hardly rise when leaning back. Comfortable and hard-wearing upholstery ensures a high level of comfort when working.

An orthopaedic chair should combine all these elements. If you combine these elements with the right sitting position, it makes working much more pleasant and significantly more back-friendly. The entire seat surface should be utilized. The upper and lower arms should form at least a right angle when the forearms are placed on the table.

Backrest with lumbar support in the test

The lower back area is almost the most common area for back pain. The reason for this is that the majority of the body weight is carried by the lumbar spine. An ergonomic office chair should therefore have a lumbar support. But what exactly is a lumbar support and what are its benefits?

The lumbar support, also known as the lumbar vertebrae or lumbar support, is part of the backrest. It is modeled on the human spine, as it takes into account the forward curvature of the spine in the lumbar region - the lordosis. Due to its shape, it should adapt perfectly to the user's back and body size. The lumbar spine area is particularly stressed by long and rigid sitting, for example in an office or car. This leads to poor posture in the lower back, which in turn often causes severe pain. In some cases, the pain can also radiate from there into the leg. The purpose of the lumbar support is to support the lumbar vertebrae during long periods of sitting without movement and thus prevent incorrect posture and pain. Ideally, the lumbar support should be individually adjustable, as every back is different. In particular, the curvature and height of the support should be adjustable. Pay attention to your well-being when adjusting the lumbar support and adapt it to your needs. Whether the support is located in the inwardly curved area of the lower spine or a little lower, on the bony ridge - the important thing is that you adjust the support according to your well-being so that it provides comfortable and upright support.

Active sitting can also help to reduce or even prevent lower back pain. So try to change your sitting position as often as possible to keep moving. You can find out exactly what is meant by active or ergonomic sitting in our blog post “Ergonomic sitting in the home office”.

Headrest with headrest in the test

A headrest or neckrest is not always absolutely necessary for the chair to be as ergonomic as possible. Many people do not need an extra neck support and do not suffer from it, as the neck and throat muscles can usually support the head very well. However, if you often suffer from neck or throat pain after work, a height-adjustable neck support may be useful. It can help to support the head and thus relieve pressure on the cervical vertebrae in particular, but also on the back. It is important that the headrest is adjustable, because to be able to use the full function, you need a headrest that is perfectly adjusted to you. The depth of the headrest should be adjusted so that the head does not fall backwards or forwards. The adjustment should be relatively simple, as an incorrect head position is quite uncomfortable for most people. A headrest is therefore an advantage, but for many it is just another aid and not a direct remedy for back or neck pain.

Disc supports in the test

Intervertebral disc chairs are all chairs designed to provide the best possible relief and protection for people with existing back pain. This can reduce sick days without causing further damage to yourself. What is important for intervertebral disc supports is that they can be customized in many respects. This is because everyone has different needs depending on their clinical picture and body structure. In addition, the chair should be well sprung in order to avoid shocks and compression of the spine, which can lead to severe pain in the case of an existing clinical picture. An ergonomically shaped seat surface is also a must to avoid pressure points on the legs and buttocks. Breathable upholstery and cover material also help to avoid pressure points. All the important factors for intervertebral disc pain summarized once again:

• Adjustable seat height
• Adjustable seat depth
• Adjustable backrest height and inclination
• Dynamic backrest (scope in inclination) to enable active sitting
• seat depth suspension
• Adjustable armrests
• ergonomically shaped seat surface

Boss chair in the test

Boss chairs are probably the classiest way to equip your office with an office chair. They are heavily upholstered, made with high-quality materials and offer an ergonomic and comfortable seat with a great look. This is why they are often used in offices with customer contact or offices. In our article “Ergonomic executive chairs in the test” we present our personal top 10 executive chairs in detail and also look at the conditions that a good executive chair must meet. Our test winner Haider Bioswing 780 iQ Bestseller is probably one of the most ergonomically sophisticated products you can buy. But executive chairs also offer great ergonomics and comfortable seating when adjusted correctly. A great way to upgrade your workplace in every respect.

 By the way: If you want to find out how to set up your workplace ergonomically to perfection, we recommend our blog post with examples.

Stool & office stool in the test

We have also extensively tested stools and ottomans in another test report. You are welcome to read our report “Ergonomic stools in the test” to find out which stools are our test winners and what is important for a stool for the office. Our personal top product is the “Aeris Swopper”. The stool is ideal for long periods of sitting in the office or home office. It can be moved forwards, vertically and sideways to strengthen the back and abdominal muscles. Due to the lack of a backrest, stools generally have the advantage that the back muscles remain in constant motion, are not fatigued and are strengthened over time. So if you want to strengthen your back in the long term (which is usually recommended), a stool may even be a better choice than an office chair. In any case, active sitting is particularly encouraged on a stool. Find out more in our article and train your back with one of our ergonomic stools.

Meetings are much more relaxed with ergonomic stools

Our office chair test winners at a glance

In the following sections, we would like to introduce you to our personal top 10 office chairs. In addition to two chairs from the brand Löffler, we also chose chairs from Haider Bioswing, Aeris, MOIZI, Varier, SITWELL and Rohde & Grahl. All of these chairs offer optimum ergonomic conditions for everyday work in the office or home office. In addition to the features, we also based our test on the ergonomic conditions of the office chairs. Do you have any questions about the different chairs or would you like to purchase one of our products directly? Then please contact us by e-mail or telephone. We will find the perfect office chair for your individual needs.

Floor Figo Air

The Figo Air air mattress combines individually adjustable features with excellent moisture regulation. Thanks to the airy mesh back, you can avoid excessive perspiration even in the summer months and keep a cool head in the truest sense of the word. The height-adjustable lumbar support provides additional support in the back. There are two basic versions of the Figo Air lumbar support, the 1N is available without and the KN with headrest. This is rarely an advantage and can therefore be omitted if not absolutely necessary. You can also choose between no, 2D or 3D armrests. Both variants are recommended from an ergonomic point of view, as they provide support for the neck and cervical area. The ErgoTop technology allows you to sit as if you were sitting on an exercise ball, as the seat surface tilts in all directions. If you opt for the model with fixation, this effect can also be switched off. The complete specifications of the Löffler Figo Air summarized:

• ERGO TOP - technology for back-training sitting
• Mesh backrests (available in various colors) - optionally available with mirror upholstery
• Height-adjustable backrest
• Height-adjustable lumbar support
• Point synchronous mechanism (45-120 kg)
• Adjustable seat depth (43-48 cm)
• Adjustable seat height (41.5 cm - 50.5 cm)
• Seat width 47 cm
• Universal castors 65 mm
• Black or polished aluminum base
• Headrest (on the KN model)
• Optional armrests (2D or 3D)

The Löffler Figo AIR is a very ergonomic office chair at an affordable price and therefore our test winner for ergonomic office chairs.

Haider Bioswing 260 iQ bestseller

The Haider Bioswing 260 iQ bestseller impresses with the unique Haider Bioswing 3D seating system and extremely comfortable seating comfort. With this technology, the chair can be individually adjusted for each sitter and you always stay in motion. In addition, the pelvic balance technology strengthens the back when sitting. You can also opt for a simple seat tilt adjustment. The armrests are available in 1-function (height-adjustable) or 4-function (height-, width-, depth-adjustable and swivel on both sides) versions. All functions of the Haider Bioswing 260 iQ bestseller in the ¨overview:

• oriented towards ergonomics and orthopaedics
• Integrated, adaptive Haider Bioswing 3D seating system
• Synchronous mechanism & automatic weight adjustment
• adjustable seat tilt
• adjustable seat depth (46-52 cm)
• adjustable seat height (42-52 cm)
• seat width 45 cm
• individually adjustable armrests (1F or 4F)
• Height and tilt-adjustable backrest - 60 cm
• black fabric cover
• Soft double castors (optionally also hard for carpeted floors)

The Haider Bioswing 260 iQ bestseller combines ergonomics, back training and individual adaptability. The only thing you have to pay a little more for is the price. That's why it comes second in our top list.

Haider Bioswing 360 iQ bestseller

The Haider Bioswing 360 iQ bestseller also impresses with its unique Haider Bioswing technology. The optimized ergonomic standards not only promote well-being at work, but also the performance of your employee. Benefit from the optional pelvic balance and train your back gently with the permanent micro-movements of the chair. You can also choose between different armrests for the 360 iQ bestseller. The complete features of the Haider Bioswing 360 iQ bestseller in the ¨overview:

• Integrated, adaptive Haider Bioswing 3D seating system
• Synchronous mechanism & automatic weight adjustment (35 to 150 kg)
• Adjustable seat tilt - infinitely variable via gas spring
• adjustable seat depth (46-52 cm)
• adjustable seat height (42-52 cm)
• seat width 47 cm
• individually adjustable armrests (1F or 4F)
• Height and tilt-adjustable backrest - 60 cm
• depth-adjustable lumbar support up to 3.5 cm
• Plastic footrest 68 cm
• Soft, black castors (optionally also hard for carpeted floors)
• Black fabric cover

The Bioswing Haider 360 iQ bestseller is another very good model from the brand. It impresses with its ergonomic specifications and individual adaptability. Like all Haider Bioswing brands, however, you have to expect a higher price. The 360 iQ bestseller therefore takes a well-deserved 3rd place on our list.

Aeris 3Dee

Aeris itself describes its 3Dee as the most innovative chair in the world. No matter what sitting position you are in, the chair adapts to you and offers comfort. The chair has a striking appearance and looks more like a stool with a backrest than a classic office chair. Thanks to its vertical suspension, your body remains active even when sitting, and all your organs and brain are better supplied with nutrients. This promotes concentration and strengthens the back muscles.
Unfortunately, there are some drawbacks to the chair, as it has hardly any customization options and no armrests or headrests. The data of the Aeris 3Dee in the ¨overview:

• Patented Swopper technology (therefore sitting in motion)
• Fabric cover
• choice of standard or high suspension strut type
• Backrest with slat technology and lumbar support (adjustable in 2 stages)
• Adjustable seat height 42-56 cm

The Aeris 3Dee is a very unusual chair, but its freedom of movement can have a good effect. That's why it lands in fourth place on our list.

MOIZI 21

The chairs in the MOIZI series are represented twice in our top list. They stand for dynamic sitting, intuitive and individual adjustability as well as outstanding workmanship. The special buffer and spring mechanism encourages the sitter to change sitting posture frequently, thus strengthening the back muscles and having a positive effect on the intervertebral discs, metabolism, circulation and nervous system. The MOIZI 21 is therefore an ergonomic model for many body functions. In our store you have the choice between different covers made of fabric or leather. The armrests and a wooden cover over the footrest are also available as options. You can choose the wooden cover of the chair to be transparent lacquered, painted and waxed or stained, so that you can also configure the chair to perfectly suit your home office and maintain your homely flair.
The complete features of the Moizi 21 at a glance:

• numerous ergonomic and orthopaedic positive effects
• height-adjustable backrest
• ergonomically shaped backrest cushion
• adjustable seat height 47-58 cm
• seat depth 50 cm
• seat width 45.5 cm
• Optional armrests with wooden support - height and width adjustable
• Footrest optionally with wooden cover
• Wheels for hard or soft floors

The Moizi 21 is above all an appealing office chair in terms of design. The wood gives the chair a classy touch and the upholstery is available in a wide range of colors and materials. The Moizi 21 also offers a number of individual adjustments and ergonomic advantages for many body functions.

MOIZI 18

The MOIZI 18 also encourages the sitter to make constant movements thanks to its special spring-swing mechanism, resulting in a frequent change of load on the spine. This trains the abdominal and back muscles, protects the back and intervertebral discs, stimulates blood circulation and improves breathing. Basically, you can choose between two versions of the MOIZI 18. One version with a low backrest, the other with a high backrest. The latter is of course always more recommendable from an ergonomic point of view. You can also choose between a soft (recommended for people up to approx. 65 kg) and a hard (recommended for people over 65 kg) spring mechanism. From synthetic fiber to leather, you can choose from a wide variety of covers, giving the office chair a special look, especially in combination with the wooden surface. All the specifications of the MOIZI 18 at a glance:

• numerous ergonomic and orthopaedic benefits
• choice of high or low backrests
• multi-height adjustable backrest
• ergonomically shaped backrest
• adjustable seat height 50-59 cm
• Seat depth 44 cm
• seat width 44 cm
• Optionally with armrests
• Footrest optionally with wooden cover
• Wheels for hard or soft floors

Choose the MOIZI 18 and get a chair that stands out visually and promotes health in your office or home office area.

Löffler Tango 2450

The Löffler Tango 2450 is an office chair with a wide range of applications and extensive features. The already mentioned ERGO TOP technology from Löffler is also used here. The seat surface can be moved in all directions and therefore feels like sitting on an exercise ball. If you prefer not to have this experience, you can also order a fixable mechanism. The Tango also has an extra high backrest with integrated headrest and comfortable depth suspension. All this helps to ensure that you can sit on the office chair in a way that is comfortable and gentle on your back. All data on the Tango 2450 lift chair at a glance:

• ERGO TOP technology with movable seat surface in all directions
• Optional: fixation of the ERGO TOP technology
• Ergonomic contoured seat
• Adjustable seat cushioning
• Optional armrests (2D or 3D)
• Optional lumbar support - additional depth adjustment
• Spring force adjustment (45 kg - 120 kg)
• Adjustable seat depth (46 - 51 cm)
• Seat width 46 cm
• adjustable seat height (43 - 53 cm)
• extra high adjustable backrest (height: 65-72 cm, width: 46 cm)
• Black or polished aluminum base
• Universal castors
• Fabric, faux leather or leather upholstery

The Tango 2450 lounge chair once again impresses with its ERGO TOP technology and high level of customizability. The many extras make it possible to create the perfect ergonomic office swivel chair for yourself.

SITWELL ORTHOLETIC

The Sitwell Ortholetic can be purchased in the L version with neck support or M without neck support. Only opt for a model with a neck support if you actually need it, because then you can save good money. The office swivel chair impresses with its shoulder-free backrest, which gives you a wide range of movement and infinite flexibility. An overview of the features of the Sitwell Ortholetic:

• Swivel chair for flexible shoulders
• Ortho-sacral backrest
• Integrated lumbar support
• Optional, height-adjustable and swivel headrest (model L)
• Automatic seat tilt adjustment
• Automatic angle ratio of seat & backrest
• Adjustable backrest
• adjustable seat depth 44-50 cm
• Seat width: 50 cm
• adjustable seat height 45-57 cm
• Optional 2D or 3D armrests
• Fabric or genuine leather upholstery
• Safety double castors 65 mm

The Sitwell Ortholetic can be adapted to all individual needs and boasts outstanding ergonomic properties. That's why this office chair has also found a place on our top 10 list.

NowyStyl Rohde & Grahl xenium duo back

Now for the last chair in our ranking of the top 10 chairs: the NowyStyl Rohde & Grahl xenium duo back. This somewhat unusual-looking chair is very comfortable, solidly constructed and can be extended with different armrests, headrests or seat cushions. It is therefore completely customizable and adaptable. It also stands out thanks to the two independent backrest wings, which set both halves of the backrest in motion, thus strengthening the muscles and protecting the intervertebral discs. In addition, the split backrest reduces the pressure on your spine.
You can find all the data on the Xenium duo back here:

• Synchronous mechanism, comfort synchronous mechanism or freework synchronous mechanism
• Split 47 cm high backrest “Xenium Duo-Back”
• Optional armrests (2D or 4D)
• Weight settings 45-145 kg
• Adjustable seat height 42-43 cm
• Seat width: 47 cm
• adjustable seat depth 38-49 cm
• Cover made of fabric or genuine leather
• black or polished aluminum base
• Hard or soft castors

The Rohde & Grahl Xenium duo back immediately catches the eye with its split backrest. Its backrest wings, which are attached to swinging elements, adapt comfortably to your back, creating an immediate feel-good effect on the chair. That's why it also ends up on our top list.

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Summary

An ergonomic office chair is now mandatory in almost all companies. You should therefore also get one for your employees or at home. This will not only improve your employees' well-being and health, but also their performance in the long term. Pay attention to the various ergonomically adjustable components such as seat height, seat tilt and seat depth adjustment so that the chair can be adjusted as individually as possible to the person sitting in it. A height-adjustable backrest, armrests, lumbar adjustment and possibly a neck support, which contribute significantly to ergonomics, should not be missing. In our top ranking, we were most impressed by the Figo Air task chair. This chair combines excellent ergonomic features with an affordable price and is suitable for any office.

FAQ:

1. Which are the best office chairs in comparison?
   In our personal ranking, the Löffler Figo Air office chair with its different variants comes in first place, followed by the 260 iQ Bestseller and 360 iQ Bestseller chairs from the Haider Bioswing brand. Also in our list of the top chairs are:
   • Aeris 3Dee
   • Moizi 21
   • Moizi 18
   • Löffler Tango 2450
   • SITWELL ORTHOLETIC
2. How do I find the right office chair?
   It is best if you try out an office chair directly, then you can choose the one that is most comfortable for you. But also pay attention to ergonomic standards and many adjustment options so that you can use the chair individually for yourself and a wide variety of situations.
3. What ergonomic office chairs are there?
   Almost every office chair has ergonomic components and tries to meet ergonomic standards. In our personal test, we were most impressed by the Air Figo from Löffler. Other recommended ergonomic office chairs are:
   • Haider Bioswing 260 iQ bestseller
   • Haider Bioswing 360 iQ bestseller
   • Aeris 3Dee
   • Moizi 21
   • Moizi 18
   • Löffler Tango 2450
   • SITWELL ORTHOLETIC
4. What should an ergonomic office chair be like?
   An ergonomic office chair should meet a wide range of requirements. It should support a good sitting posture and encourage the sitter to move so that the back muscles remain strong. It should also offer enough space for the sitter and be individually adjustable.