An ergonomic black gaming chair with the brand 'Secret Lab' and a 'T' logo on the backrest. The chair is connected to several mechanical components and hydraulic systems, typically used for testing durability and performance.

Engineered comfort

Every Secretlab chair begins life in our in-house lab and testing facilities. We design, test and iterate every aspect of our chairs to ensure they’re more comfortable and sturdier than ever. Our engineers run extensive research programs to understand how people interact with our chairs, so we can optimize them for better ergonomic support.

Moving beyond industry standards

Over the years, we’ve invested millions into R&D, pioneering new patent-pending technologies that encourage healthy movement throughout the day. Using advanced computer simulations and user testing, we ensure that every component and material is engineered for start-to-finish performance.

To ensure they’re as tough as they can be, every Secretlab chair is dropped, dragged, and knocked over hundreds of thousands of times. Our chairs are put through rigorous tests set by internationally recognized standards bodies, and then pushed to the limit in conditions that far exceed anything they’ll face in the real world.

Three men are collaborating in a modern office space, examining various chair components. One man points at a tablet, another holds a gaming chair, and the third man is engaged in the discussion. The backdrop features technical drawings of chair designs. Left to right: Vincent, Head of Product Development, Ian Ang Co-Founder and CEO of Secretlab, Alaric Choo Co-Founder And Chief Strategy Officer of Secretlab.

Hours of R&D

25,000+


Number of prototypes

932


Hours spent on testing

50,000+

Tested and validated by ergonomic experts

Our independent Ergonomics Advisory Board is made up of academics in the fields of biomechanics, orthopedics, and more, all working with our engineers on detailed ergonomic studies and product development reviews.

Every design change we make is grounded in data and feedback drawn from extensive testing and research into the way the modern gamer, creator, and hybrid worker sits. Your body was built to move, and a good chair should allow you to switch between different postures easily.

Secretlab TITAN Evo is the culmination of hundreds of tiny design decisions that we obsessed over — each one designed to encourage natural movement and support you across multiple activities and postures.

A person with short black hair is smiling while standing against a plain white background. They are wearing a black shirt.

Dr. Jordan Tsai
Ergonomics Advisory Board Member
PT DPT OCS Esports & Founder of Respawn Therapy

"I can feel comfortable recommending the Secretlab TITAN Evo to esports players I work with because I know they are doing their best to incorporate needed features with player health in mind."

A woman with long, curly red hair is wearing a black top and a stethoscope around her neck. She is smiling slightly and looking directly at the camera against a plain background.

Dr. Lindsey Migliore
Ergonomics Advisory Board Member
Esports Medicine Physician

“As a doctor, I previously directed my patients towards office-style chairs designed for long hours of sitting. However, the work that Secretlab has put into ergonomic development, and the breadth of expertise they're bringing to improve the sitting experience, have changed my mind.”

A man with short dark hair and glasses is wearing a dark suit, white shirt, and dark purple tie. He is smiling, and the background is plain white.

Dr. James Goh
Ergonomics Advisory Board Member
Professor, Department of Biomedical Engineering, National University of Singapore

“The TITAN Evo allows for all the essential adjustments to achieve a good sitting posture. The lumbar curvature can be customized to contour nicely at an appropriate height, providing an evenly distributed contact area to suit and support my lumbar spine well.”


A circular logo with a blue and white globe in the background. The words 'UNITED STATES' are arched at the top, and 'ERGONOMICS' are arched at the bottom. A bold, black banner across the middle displays the word 'CERTIFIED' in white letters.
United States Ergonomics Certified

The Secretlab TITAN Evo is certified by United States Ergonomics to provide measurable ergonomic benefits to the user by improving comfort and fit and minimizing risk factors that may cause injuries. United States Ergonomics certification indicates that leading experts in the field of ergonomics back TITAN Evo. 

Experts have subjected TITAN Evo to rigorous, objective tests in adherence to guidelines established by the International Ergonomics Association. This ensures it meets or exceeds standards derived from published literature and principles of ergonomics, biomechanics, and human factors.

More on modern ergonomics

TECH: TITAN EVO SERIES

Click to learn more
Exploded view of a gaming chair assembly. The diagram displays various parts, including the seat, backrest, armrests, base, casters, and connecting hardware. Each component is shown separately to illustrate how they fit together.

Science-backed engineering.
Shaped for performance.

An image featuring three logos. From left to right: SGS logo with 'Performance Tested,' 'Hypoallergenic,' and 'Air Quality: Platinum' text; Intertek logo with 'Total Quality. Assured.'; and the Agency for Science, Technology and Research Singapore logo.


Dynamic lumbar support

People of varying heights and builds produce vastly differing peak pressure patterns. A well-designed chair should distribute weight equally well for all body shapes and sizes.

Our labs are equipped with sensor-lined pressure mats to map and assess pressure distribution.

A close-up view of a transparent mechanical device showcasing an intricate interior design, including black components with geometric patterns, green neon highlights, and orange directional arrows indicating airflow or movement through various parts.

Our patent-pending 4-way L-ADAPT™ Lumbar Support System* is the most advanced ever on a gaming chair, far outperforming traditional 2-way lumbar systems. It can be adjusted for height and depth, tucking neatly into the curvature of your lower back.

A proprietary Y-shaped lattice of living hinges flexes to your spine as you move, for optimal support no matter how you sit.

*SG Pat. App. No. 10202107378T & PCT App. No. PCT/SG2021/050585


Proprietary foam technologies

Our patent-pending cold-cure foam and Secretlab NanoFoam™ Composite are specially formulated in our lab to relieve stress over long hours of sitting. Foam density tests and advanced pressure mapping sensors let us optimize the density for even weight distribution and maximum pressure relief.
Close-up of a sleek, modern office or gaming chair. The seat is mostly black with a contrasting white section on one side. The chair features red stitching accents and appears to have a cushioned design with textured fabric and leather-like materials.
Patent-pending cold-cure foam

Secretlab cold-cure foam is deliberately formulated to be medium-firm — the optimal balance for that gentle, cradling feel. Cast as a single piece from precise aluminum molds, it enjoys a uniform consistency throughout for more even pressure distribution.

*SG Pat. App. nr. 10202400558T

Close-up of a sleek, modern office or gaming chair. The seat is mostly black with a contrasting white section on one side. The chair features red stitching accents and appears to have a cushioned design with textured fabric and leather-like materials.
Minimal pressure
Substantial pressure
Concentrated pressure
Why we design our foam to be medium-firm

While soft foam might feel more comfortable when you first sit down, it lacks the necessary ergonomic support to absorb stress over time — and instead transfers it directly to your body, leading to pain and discomfort.


Studies show that firmer foam surfaces decrease pressure on key areas, such as the ischial tuberosity (sit bones), lowering the risk of back pain from prolonged periods of sitting.¹ This is due to reduced spinal loads, which prevent lower back strain.

A heat map with a grid background, displaying varying intensities of blue, green, and yellow shades. The central area is predominantly white, with a small red dot at its center. The heat map shows higher intensity areas in green and yellow along the edges.
Patent-pending Cold-Cure Foam Chair
Secretlab TITAN Evo
USD$589
A heat map with two prominent hotspot areas in the shape of a 'U.' The central regions are red, surrounded by yellow, green, and blue gradients indicating varying intensity levels. The background consists of a light gray grid.
Popular Mesh Task Chair
Brand X
USD$1,645
Close-up of a surfboard with a smooth, shiny, blue and purple gradient finish. The surface is glossy, reflecting light, and the board's curved shape is visible, showcasing its aerodynamic design.
Close-up of a surfboard with a smooth, shiny, blue and purple gradient finish. The surface is glossy, reflecting light, and the board's curved shape is visible, showcasing its aerodynamic design.
Secretlab NanoFoam™ Composite

Secretlab NanoFoam™ Composite combines our trademark medium-firm cold-cure foam with a soft, lightweight microfoam top. Our next-generation foam cuts through decades-old assumptions to deliver a soft, cushioned feel while still maintaining full ergonomic support for your body — bringing together conventionally opposing qualities to deliver our softest and most supportive foam yet.

Specialized Finite Element Analysis (FEA) and pressure mapping software allow us to optimize the thickness ratio and position of our cold-cure foam and microfoam across the seat base and backrest, down to the millimeter. A biomechanical model of the human body was also used to simulate stress on internal tissues, allowing us to identify which areas of the seat require more support or greater softness. This ensures targeted support at regions with higher pressure peaks, such as the rear of the seat base. To account for different body types, individual parameters such as body weight, body surface area, and lower limb muscle volume were considered to develop a formulation that would work for the vast majority of users.

Learn More

Ergonomic seat base & backrest

Our engineers worked with testers of varying heights, weights, and body types from all across the world, shaping and contouring the seat base and backrest to minimize pressure peaks.

Proprietary pebble seat base
A close-up of a black ergonomic chair featuring red stitching. The chair back displays a graphic comparing “Omega Seat Base” and “Titan Seat Base” positions. The seat has an adjustable height mechanism and armrests with a sturdy five-wheel base.

Shaped for optimal ergonomic support to accommodate natural movement and multiple postures. The gently sloping sides guide you toward the middle for a larger contact area and a lower and more uniform pressure distribution.² The flared edges make even more room for the full range of postures, with none of the constraints of a typical bucket seat.

Close-up of an adjustable office chair, focusing on the seat and backrest. The chair features black upholstery with red stitching, a lever for height adjustment, and a contoured seat design. The base has five wheels for mobility on the floor.
Waterfall edge

We identified common pressure points and molded our seat for greater comfort. The gentler seat incline takes pressure off your thighs, while the more acute angle of the seat edge reduces pressure behind your knees. The rounded edge maintains blood circulation,³ reducing the risk of varicose veins and other circulatory issues.

Backrest
A high-back black gaming chair with the brand 'Secret Lab' and a 'T' logo is shown. The chair features red accents and ergonomic design, with red arrows indicating airflow or support along the sides. The armrests are visible on the sides.

The side wings on most gaming chairs adopt an aggressive curve of over 55°, forcing your shoulders forward into an unnatural position. The Secretlab TITAN Evo features a far gentler 30° slope, which follows the natural horizontal curve of your shoulders. It supports your shoulders, while still giving you room to move.


Full-Metal 4D Armrests with CloudSwap™ Replacement System

We believe in being able to choose exactly how you want to sit. The Secretlab TITAN Evo offers the most advanced customization on any gaming chair, down to the smallest details.

The image shows the Secretlab CloudSwap system, where an armrest attachment is being swapped out. The detachable armrest is removed from a gaming chair, showcasing its modular capability with a sleek, black design. The Secretlab logo and 'CloudSwap' text are displayed.

Our magnetic CloudSwap™ Technology — the world’s first on a gaming chair — lets you swap out your armrest tops on the fly. Choose between PlushCell™ and Technogel armrest tops, for support that feels just right for you.


Magnetic Memory Foam Head Pillow

No more straps. Our patented* Magnetic Memory Foam Head Pillow allows for seamless adjustments — and even better support for your posture.

A close-up of a Secretlab gaming chair. The chair is black with gold logos and stitching. It features the Secretlab emblem and text on the backrest and neck pillow, which is also black. The backrest is ergonomic with red stitching accents.

We studied the positions of people’s heads and necks over long hours, monitoring micro-movements and mapping out contact points. Our Magnetic Memory Foam Head Pillow is designed entirely in-house, featuring 100% high-density, visco-elastic Secretlab PlushCell™ foam. A more aggressive upper curve provides enhanced support and pressure relief for the base of your head and supports it in a neutral position. Custom embedded magnets snap the pillow onto your headrest — move it up or down to find the perfect spot.

*SG Patent No. 10202107385U & US Patent No. US 12,042,059 B2


Shorter Class 4 hydraulics

We design our chairs for an optimal fit for as many people as possible. This means being able to set your feet flat on the floor, with your knees bent at roughly 90°.

A person, seen from the torso down, sits in a modern office chair with adjustable armrests. They are wearing a black shirt, dark jeans, and white sneakers. The chair has a gray upholstered seat and black plastic components with wheels on a smooth, white background.

A new, shorter hydraulic mechanism for the Secretlab TITAN Evo Size S and R accommodates an even wider range of heights, so you can plant your feet comfortably.


Advanced materials

Your chair should look and feel as good as it did on Day 1. That’s why we’re constantly refining the composition of each layer of our leatherette and the construction of our signature fabric, so they feel better and last even longer.

Secretlab NanoGen™ Hybrid Leatherette

Close-up of a textured white surface with a prominent seam running diagonally. The lighting creates subtle shadows, highlighting the grain and texture of the material.

Secretlab NanoGen™ Hybrid Leatherette is an ultra-soft, ultra-resilient leatherette that sets a new standard in material innovation. Characterized by a rich grain and a luxurious sheen that is immediately apparent at the first touch, it is our plushest leatherette yet, and 14x more durable than regular PU leather.

Over the past decade, our engineers have experimented with different leatherette compositions, studying the best attributes of each one and how to reproduce them in the same material. Employing the latest manufacturing technologies, we developed a method to integrate ultra-dense nanofibers into both the surface and base layers through an advanced needle-point process, enhancing that buttery-soft feel under the skin as well as stain and UV resistance.

Learn More

Secretlab NEO™ Hybrid Leatherette

Close-up image of a textured, dark grey or black surface, likely leather or a similar material, with subtle variations in shading and visible grain pattern. The lighting accentuates the texture, creating a slightly reflective and somewhat matte appearance.

Over the past 6 years, we’ve worked with myriad types of leatherette and learnt a lot about how to bring out the best in it. Secretlab NEO™ Hybrid Leatherette exhibits a super smooth grain, recreating the rich luster of NAPA leather. Using the latest manufacturing technologies developed right in our labs, a unique resin top laminate is bonded to the base layer. A careful finishing process results in an ultra-smooth top hide that feels incredible under your skin.

Image displaying a close-up of the Secretlab Neo Hybrid Leatherette material on a chair. A magnified inset highlights the resin top laminate and 3D-reinforced polyurethane-microfiber base layer. The inset text reads '30x ZOOM.

Regular PU leather peels in humid environments. The middle foam layer absorbs moisture and gradually degrades due to hydrolysis. To avoid this, we stripped out the middle layer and reinforced the base with a bespoke 3D structure of ultra-fine polyester fibers for exceptional strength, flex, and abrasion resistance.

Taber® Rotary Platform Abrasion Test
Taber® Rotary Platform Abrasion Test
Taber® Rotary Platform Abrasion Test

We experimented with 8 different leatherette compositions to find one that could further improve the durability of our industry-leading Secretlab PRIME™ 2.0 Leatherette. 12x more durable than regular PU leather, Secretlab NEO™ Hybrid Leatherette combines the finest elements of different leatherette samples.

Our leatherette is subject to the Taber Abrasion Test — the industry standard for wear resistance — where the sliding rotation of two abrading wheels reveals abrasion resistance at all angles relative to the grain. With rub-wear action over 10,000,000 square millimeters of surface area using a 300% heavier load, our leatherette has been tested to outlast even the harshest conditions.

Secretlab SoftWeave® Plus Fabric

Close-up image of a textured fabric featuring a pattern of interwoven black and white threads, creating a mottled and dynamic appearance. The fabric appears to be knit and has a soft, cozy texture with subtle variations in shading and density.

A technical knit that’s a first for performance seating. Interlacing loops of high-strength yarn fibers allow for smaller details to be incorporated in each and every stitch. With control over every thread and pixel, we’re able to implement multiple layers of varying colors, shades, and tones. This enables us to map complex designs into our fabric, including a 3D gradient knit on the side wings and seat base of each chair.

Tensile Test
Tensile Test
Tensile Test

3.5x stronger than its predecessor. SoftWeave® Plus Fabric is softer and more breathable, and engineered for even greater tensile and seam strength. Stretched for hours on end in both the warp and weft direction, SoftWeave® Plus emerges completely unscathed. The high-performance technical fabric you want for years of that Day 1 feel.


Relentless testing

We put every single one of our chairs through over 190 load, durability, and material tests to ensure that they’re more than able to stand the test of time.

Load Tests

A diagram illustrating a chair lift. The image shows a fabric sling attached to a ceiling track above a chair, with arrows indicating the downward motion onto the chair. The chair has armrests and is drawn in a simplified, outlined style.

Drop Load Proof Test

136kg (300lbs) weight dropped onto the center of the seat.

Illustration of an office chair with a diagram showing adjustable features. It highlights the backrest's recline mechanism and the armrest's height adjustment. Arrows and a spring indicate the movement and flexibility of the reclining backrest.

Backrest Load Test

A force of 1,001N is applied to the backrest for 1 minute.

A diagram shows an office chair with an adjustable armrest and backrest. Beside the chair, a hammock is suspended from a bar with hooks. An arrow points from the chair towards the hammock, suggesting the hammock as an alternative for relaxation.

Forward Overturning Test

A vertical force of 600N is applied at points most likely to result in overturning.

Illustration of an ergonomic office chair showing adjustable lumbar support feature. The backrest is depicted with lines and arrows to indicate movement and support adjustments. A lever mechanism under the seat is also highlighted.

Rearward Stability Test

13 heavy discs are loaded against the backrest.


Durability Tests

A diagram of an office chair with ergonomic lumbar support. The illustration features arrows and lines indicating the adjustable back support mechanism and the cushioned seat area designed for comfort. The chair has armrests with small adjustments marked.

Seating Durability Test

100,000 cycles
A 57kg (125lbs) weight falls onto the seat.

A diagram shows a side view of an office chair being tilted backward, with red arrows indicating the direction of movement. The image includes a weight labeled 'KG' placed on the backrest, illustrating the chair's tilt mechanism and weight testing.

Tilt Mechanism Test

300,000 cycles
Chair is tilted with 109kg (240lbs) weight on the center of the seat.

A line drawing illustrates the process of attaching a saddle on a bicycle seat post. An arrow points downward to a clamp mechanism, showing the correct placement and direction for securing the saddle rails onto the seat post clamp.

Armrest Durability Test

60,000 cycles
A force of 400N is applied to each arm.

A diagram illustrating the base of an office chair with red arrows showing it rotating. The chair has wheels and several vertical red lines around the base, indicating the motion and rotational capability of the chair.

Swivel Test

120,000 cycles
A 122kg (270lbs) weight is applied on the seat at both its maximum and lowest height.

An illustration of a rectangular box labeled 'Secret Lab' tipping over with three red arrows pointing down towards it, indicating the direction of the force. The box is tilting on one corner with motion lines demonstrating the impact.

Packaging Drop Test

We drop our packaging several times from height to make sure it protects your chair from the bumps and knocks during shipping.


Up to a 5-year
Extended Warranty

Fully-certified reliability

Learn more about warranty extension
A black office chair undergoing durability testing in a lab. The chair is mounted on a metal apparatus with several mechanical components and sensors. The setup appears to simulate different movements and stress to assess the chair's strength and stability.

Secretlab chairs are engineered for lasting comfort over the years. A lot of time is devoted to searching for more durable materials and creating tougher designs. That’s why we’re standing behind the Secretlab TITAN Evo with a 5-year Extended Warranty, so you know we have your back for the years ahead.

* Receive a complimentary 2-year extension for a total warranty period of 5 years when you share a picture of your Secretlab chair. Learn more about our Extended 5-Year Warranty programme here.

Learn more about our certifications

Patents / Design Registrations
Secretlab’s products are protected by the following registered patents and design registrations in various countries and regions.
Secretlab TITAN Evo
  • Patent No. 10202000104V (SG)
  • Patent No. 10202000095X (SG)
  • Patent No. 10202107385U (SG)
  • Patent No. US 12,042,059 B2 (US)
  • Patent No. 11925273 (US)
  • Utility Model No. ZL202120730172.X (CN)
  • Utility Model No. ZL202220804963.70 (CN)
  • Utility Model No. ZL202221718442.6 (CN)
  • Utility Model No. 202022101 958.4 (DE)
  • Design No. 202113662 (AU)
  • Design No. 202117821 (AU)
  • Design No. 008579635-0001 (EU)
  • Design No. 008579635-0002 (EU)
  • Design No. 30202110343P (SG)
  • Design No. 30202110194W (SG)
  • Design No. 6181058 (UK)
  • International Design Registration No. DM/215365 (EU, SG and UK)
  • International Design Registration No. DM/215273 (EU, SG and UK)
Secretlab Classics Series
  • Patent No. 10202000104V (SG)
  • Patent No. 10202000095X (SG)
  • Design No. 201916028 (AU)
  • Design No. 2019306414057 (CN)
  • Design No. 004407674-0001 (EU)
  • International Design Registration No. DM/204840 (EU, SG and UK)
Secretlab MAGNUS Series
  • Utility Model No. ZL202120792809.8 (CN)
  • Utility Model No. 20 2022 102 069.8 (GE)
  • Design No. 202112541 (AU)
  • Design No. 202130224672.1 (CN)
  • Design No. 30202008571T (SG)
  • International Design Registration No. DM/214659 (CA, EU, UK and US)
Secretlab MAGNUS Monitor Arm
  • Utility Model No. ZL202222049159.5 (CN)
  • Design No. 202230178532X (CN)
  • Design No. 30202210708U (SG)
Secretlab Premium Footrest (PlushCell™ Memory Foam)
  • Design No. 30202300378U (SG)
Secretlab Professional Footrest (CloudSwap™ Technology)
  • Utility Model No. 202310072388.5 (CN)
Secretlab Ergonomic Recliner Add-On (PlushCell™ Memory Foam)
  • Design Application No. 30202400745W (SG)
  • Design Application No. 30202400746Q (SG)
  • Design Application No. 30202400747S (SG)
Patents / Design Pending Applications
Secretlab TITAN Evo
  • PCT Application No. PCT/SG2020/050794
  • PCT Application No. PCT/SG2021/050006
  • PCT Application No. PCT/SG2021/050585
  • Patent Application No. 10202107378T (SG)
  • Patent Application No. 10202400558T (SG)
  • Patent Application No. 10202203785V (SG)
  • Patent Application No. 202080091444.4 (CN)
  • Patent Application No. 202180007929.5 (CN)
  • Patent Application No. 202180100249.8 (CN)
  • Patent Application No. 202210786259.8 (CN)
  • Patent Application No. 22167846.90 (EU)
  • Patent Application No. 21949473.9 (EU)
  • Patent Application No. 22183039.1 (EU)
  • Patent Application No. 24 152 073.3 (EU)
  • Patent Application No. 18/576,599 (US)
  • Design Patent Application No. 29/795,481 (US)
  • Design Patent Application No. 29/795,489 (US)
  • Design Patent Application No. 29/832,291 (US)
Secretlab Classics Series
  • PCT Application No. PCT/SG2020/050794
  • PCT Application No. PCT/SG2021/050006
  • Patent Application No. 10202201711Q (SG)
  • Patent Application No. 202180007929.50 (CN)
Secretlab MAGNUS Series
  • PCT Application No. PCT/SG2021/050688
  • Patent Application No. 10202011185R (SG)
  • Patent Application No. 10202205283T (SG)
  • Utility Model Application No. 202120792809.8 (CN)
Secretlab SKINS
  • PCT Application No. PCT/SG2022/050423
  • Patent Application No. 10202106602T (SG)
  • Patent Application No. 202280050495.10 (CN)
  • Patent Application No. 22 825 445.4 (EU)
  • Patent Application No. 18/571,300 (US)
  • Utility Model Application No. 21 2022 000 229.6 (DE)
  • Design Application No. 202230696769.70 (CN)
  • Design Application No. 30202250572P (SG)
  • Design Patent Application No. 29/857,502 (US)
Secretlab MAGNUS Monitor Arm
  • Patent Application No. 10202250118P (SG)
  • Utility Model Application No. 20 2022 104 416.3 (DE)
Secretlab Premium Footrest (PlushCell™ Memory Foam)
  • Design Patent Application No. 29/928,882 (US)
  • Design Patent Application No. 29/928,885 (US)
Secretlab Professional Footrest (CloudSwap™ Technology)
  • Patent Application No. 202310072388.5 (CN)
  • Design Patent Application No. 29/946,871 (US)
  • Design Patent Application No. 29/946,873 (US)
Secretlab Seat Cushion (PlushCell™ Memory Foam)
  • Design Application No. 202430631853X (CN)
  • Design Application No. 2024306318578 (CN)
  • Design Application No. 30202400555S (SG)
  • Design Application No. 30202400554T (SG)
  • Design Patent Application No. 29/936,117 (US)
  • Design Patent Application No. 29/936,115 (US)
Secretlab Ergonomic Recliner Add-On (PlushCell™ Memory Foam)
  • Patent Application No. 18/641,545 (US)
  • Design Application No. 202430455046.70 (CN)
  • Design Application No. 202430455054.10 (CN)
  • Design Application No. 202430455045.20 (CN)
  • Design Patent Application No. 29/953,092 (US)
  • Design Patent Application No. 29/953,094 (US)
  • Design Patent Application No. 29/953,095 (US)
¹ Makhsous, M., Lin, F., Bankard, J., Hendrix, R.W., Hepler, M., & Press, J.M. (2009). Biomechanical effects of sitting with adjustable ischial and lumbar support on occupational low back pain: evaluation of sitting load and back muscle activity. BMC Musculoskeletal Disorders, 10, 17 - 17.
² Sprigle, S.H., Chung, K.C., & Brubaker, C.E. (1990). Reduction of sitting pressures with custom contoured cushions. Journal of rehabilitation research and development, 27 2, 135-40.
³ Alnaser, M.Z., Wughalter, E.H. (2009). Effect of chair design on ratings of discomfort. Work, 34 2, 223-34.
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