An in-depth look into the ergonomics, user insights, and design principles
that shape AndaSeat chairs.
An in-depth look into the ergonomics, user
insights, and design principles
that shape AndaSeat chairs.
AndaSeat upholds the highest standards in chair design and manufacturing — with meticulous attention to even the smallest details. Prioritizing ergonomic comfort and support, we study human anthropometrics to achieve an ideal fit and push for innovative materials,features to make sitting exceptionally effortless. We use cutting-edge manufacturing processes and rigorous testing every step of the way to deliver a sophisticated quality that lasts. From the initial design to the final product, every chair is defined by advanced technologies and masterful craftsmanship.
At AndaSeat, our top priority in design is ensuring every chair fits you perfectly. We believe it is the key to ideal comfort and productivity. And this asks us to design with the best ergonomics and integrate it into every aspect of chair design.
Therefore, we consistently study human body measurements, sitting postures, or motion behaviors to more accurately assess chair size and fitting flexibility.
People come in different heights, sizes, and weights because of gender, age, or ethnicity. As the FAA and BIFMA suggest, this makes the “5th percentile female to the 95th percentile male” range the universal basis for chair design practices.
And according to the ergonomic design textbook of City University of Hong Kong, this range can accommodate up to 95% of the population.
We sit in different ways, tend to sit longer, and may need to reach, recline, sidle, or more. So a good seated posture should offer natural, seamless position changes and cause less stress on the body. This often requires a wider motion range for the chairs.
A sitting posture
Side-to-side mobility
Back-and-forth mobility
A chair's supporting points
A sitting posture Side-to-side mobility
Back-and-forth mobility A chair's supporting points
To achieve this level of easiness and accommodate as broad a population as possible, our engineers design for an adjustable range.
We refer to the BIFMA standards or go beyond based on our users’ general preferences and physical needs.
In designing Kaiser 4, while its most measurements stick to the standard, we built its seat deeper and the backrest higher and wider to accommodate user needs for leisure comfort and flexibility.
To achieve this level of easiness and accommodate as broad a population as possible, our engineers design for an adjustable range. We refer to the BIFMA standards or go beyond based on our users’ general preferences and physical needs.
In designing Kaiser 4, while its most measurements stick to the standard, we built its seat deeper and the backrest higher and wider to accommodate user needs for leisure comfort and flexibility.
| Measurements | Seat Height | Seat Depth | Seat Width (incl. sides) | Backrest Height | Backrest Width | Armrest Height | Armrest Distance | |
|---|---|---|---|---|---|---|---|---|
| BIFMA Standard | 14.8” – 20.2” | ≤ 16.3" | ≥ 19.3" | ≥ 13.9" | ≥ 14.2" | 7.7" - 11.4" | ≥ 19.4" | |
| Kaiser 4 | L | 18.11"-20.47" | 18.50'' | 19.30" | 32.28" | 21.26" | 7.87"-10.43" | 18.11"-20.47" |
| XL | 18.11"-20.47" | 20.08" | 21.26" | 34.05" | 22.44" | 7.87"-10.43" | 18.50"-21.26" | |
| Measurements | BIFMA Standard | Kaiser 4 | |
|---|---|---|---|
| L | XL | ||
| Seat Height | 14.8” – 20.2” | 18.11"-20.47" | 18.11"-20.47" |
| Seat Depth | ≤ 16.3" | 18.50'' | 20.08" |
| Seat Width (incl. sides) | ≥ 19.3" | 19.30" | 21.26" |
| Backrest Height | ≥ 13.9" | 32.28" | 34.05" |
| Backrest Width | ≥ 14.2" | 21.26" | 22.44" |
| Armrest Height | 7.7" - 11.4" | 7.87"-10.43" | 7.87"-10.43" |
| Armrest Distance | ≥ 19.4" | 18.11"-20.47" | 18.50"-21.26" |
| Measurements | Seat Height | Seat Depth | Seat Width (incl. sides) | Backrest Height | Backrest Width | Armrest Height | Armrest Distance | |
|---|---|---|---|---|---|---|---|---|
| BIFMA Standard | 14.8” – 20.2” | ≤ 16.3" | ≥ 19.3" | ≥ 13.9" | ≥ 14.2" | 7.7" - 11.4" | ≥ 19.4" | |
| Kaiser 4 | L | 18.11"-20.47" | 18.50'' | 19.30" | 32.28" | 21.26" | 7.87"-10.43" | 18.11"-20.47" |
| XL | 18.11"-20.47" | 20.08" | 21.26" | 34.05" | 22.44" | 7.87"-10.43" | 18.50"-21.26" | |
| Measurements | BIFMA Standard | Kaiser 4 | |
|---|---|---|---|
| L | XL | ||
| Seat Height | 14.8” – 20.2” | 18.11"-20.47" | 18.11"-20.47" |
| Seat Depth | ≤ 16.3" | 18.50'' | 20.08" |
| Seat Width (incl. sides) | ≥ 19.3" | 19.30" | 21.26" |
| Backrest Height | ≥ 13.9" | 32.28" | 34.05" |
| Backrest Width | ≥ 14.2" | 21.26" | 22.44" |
| Armrest Height | 7.7" - 11.4" | 7.87"-10.43" | 7.87"-10.43" |
| Armrest Distance | ≥ 19.4" | 18.11"-20.47" | 18.50"-21.26" |
Kaiser 4 is exampled to provide necessary context.
By observing thousands of users' sitting habits, we found that people prefer adjusting chair headrests without sitting up or turning back. To make this easier, we introduced a snap-on magnetic attachment system. Featuring high-performance magnets, AndaSeat magnetic headrests provide a firm grip and accommodate a wider range of heights with a flexible 20cm up-down attachment range.
The hourglass-like shape makes the headrest fit naturally with your head, neck, and upper traps muscle curves. With 65kg/m3 density, its soft memory foam soothes your neck, while the cooling gel layer keeps the neck cooler in hot conditions.
Seamless Neck Fit
20cm up-down
Pop-out Lumbar Support
Strong back support is crucial for seated positions. Due to human spine’s S-shape, much of our upper body’s weight falls on its lumbar vertebrae, making it incredibly essential to have a lumbar system that can offer different levels of support.
The 4-level pop-out lumbar on Kaiser 4 is our most advanced yet. It offers up to 24° pop-out support as well as 76mm up-down and 30mm in-out adjustment. Intuitive to use, it allows you to fine-tune the back support to perfectly fit your spine’s natural curvature.
Up-down
Pop-out
In-out
Strong back support is crucial for seated positions. Due to human spine’s S-shape, much of our upper body’s weight falls on its lumbar vertebrae, making it incredibly essential to have a lumbar system that can offer different levels of support.
The 4-level pop-out lumbar on Kaiser 4 is our most advanced yet. It offers up to 24° pop-out support as well as 76mm up-down and 30mm in-out adjustment. Intuitive to use, it allows you to fine-tune the back support to perfectly fit your spine’s natural curvature.
In seated positions, whether gaming or working, most tasks demand frequent arm movements. Specially, playing mobile or console games requires you to fold your arms to hold the device. To address this, we added an upward folding feature to our comfort-ready 4D armrests, providing added arm support for all uses at the right heights and dimensions.
Fully molded from integral skin foam, the AndaSeat 5D armrests come with tough, abrasive-resistant skin and a more flexible core. And thanks to the ultra-strong steel base, it supports up to 90lbs load pressure, allowing you to enjoy maximum arm comfort for as long as you need.
2.56″
Up-down
1.18″
Left-right
1.18″
Forward-backward
40°
Upward fold
70°
Inward-outward rotation
To deliver optimal comfort and durability, we mold our chair's seat and back cushions with high-density cold-cure foam.
Using computer-aided mixing and injecting processes, we precisely control the liquid foam's density, weight, and curing temperature in an aluminum mold. The mold shapes the foam into exact forms that comfortably fit our bodies while maintaining its cellular structure for ultimate elasticity and softness. This makes the AndaSeat chair's cushions exceptionally lightweight, durable, and comfortable.
Every AndaSeat chair is designed to provide optimal stability, durability, and comfort with full metal seat and backrest frames.
We construct these frames using selected 20mm x 2mm cold-formed steel tubes and use the CNC framing process to ensure consistent performance. Also, they are reinforced with steel middle bars for extra strength. This design supports substantial weight without compromising comfort, providing a foundation for solid, safe, and long-lasting ergonomics.
20mm x 2mm
Cold-formed steel tubes
Reclining can help us relax spinal or back fatigue from extended sittings. In reclined positions, the action of tilting, and sometimes rocking, exponentially increases the tilt mechanism’s load pressure, demanding maximum strength and durability.
Forged with high-performance aluminum alloy and steel, the multi-function tilt mechanism in Kaiser 4 and our other best-selling chairs is impressively heavy-duty and supports up to 260lbs in all postures. We also used ceramic and electrophoretic coating processes during its construction to improve their corrosion and scratch resistance, enhancing durability over time
For comfortable seating, it is essential to keep our feet flat on the floor and knees at an angle between 90° and 110°. This posture helps reduce pressure on the spine, thighs' back, and hip bones.
To make this posture accessible for a wide range of body heights and weights, we use Class 4 gas lifts on every AndaSeat chair. They provide 6.5cm to 10cm smooth, precise height adjustment depending on the models. And with SGS certification, they deliver exceptional durability and safety.
Stains, discoloration, cracking, or even safety issues frequently arise in regular leather upholstery. And we work tirelessly to address these challenges in our chairs.
During the development of Kaiser 4, the AndaSeat engineering team spent over 180 days testing various leather types and developed our latest ArteDiPelle synthetic leather. Processed with a patented technique in certified manufacturing facilities, it is extremely resistant to stains and easy to clean. Complying with rigorous OEKO-TEX and RoHS standards, its solvent-free formula ensures a healthy and high-quality living space
Abrasion Test
It passed the 2000-cycle, 1kg Taber abrasion test and scored 100,000 on the Martindale rub test. This excellent abrasion resistance ensures durability for up to 15 years. More, its protective layer resists color fading from UVB exposure at level 4 or higher, maintaining a new, sleek surface for years to come.
Heat can build up easily while gaming, whether from your device, intense play, or hot weather. AndaSeat gaming chairs can keep you cool in these situations with linen fabric upholstery.
To enhance the chair's heat management, we've selected exceptionally absorbent and breathable 3D weave linen fabric. With a computer-controlled density of 346g/m², it’s 73% stronger than regular 200g/m² fabric, providing extra durability and S-tier comfort.
Tensile Test
Tested with two different methods, our linen fabric is exceptionally strong, elastic, and features a softer texture.
Strip method: Withstands a force of 93N in the weft direction and 88N in the warp direction without breaking.
Grab method: Withstands a force of 913N in the weft direction and 1395N in the warp direction without breaking.
From top to bottom, every chair undergoes rigorous, scientific testing for standard-leading durability and stability. This ensures a safe, comfortable, and durable experience, no matter how you play.
Seating Durability Test
A 50kg (110lbs) weight falls onto the seat center for 100,000 cycles.
Armrest Durability Test
A force of 400N repeatedly applied to the armrests for 60,000 cycles.
Backrest Durability Test
Pulled for 120000 cycles with a force of 333 N (35kg).
Drop Test
A 50kg (110lbs) weight falls onto the seat center for 100,000 cycles.
Base Load Test
A force of 11,132 N (1,136kg) is applied to the chair base for 1 minute.
Packaging Drop Test
Dropped from 1m height for 10 times. (1 time for each face and corner).
