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karada

ergonomic office chair with multiple sitting positions

the problem

With the rise of work-from-home jobs, pain and discomfort caused by improper sitting posture has become increasingly common. Over 80% of people using computers for more than four hours complain of back pain. (ncbi.nlm.nih.gov)


To gain a better understanding of the issue, I spoke with the most extreme users: gamers. Through my conversations, I learned that they regularly struggle with pain because their bodies stay in uncomfortable positions for prolonged periods. Tense moments during games only intensified the discomfort by forcing their postures to stiffen up. On top of this, I learned that most gamers don’t own chairs that support correct sitting posture.


I also spent time observing people sitting at their desks. Through this, I learned that the majority of people tend to lean forwards when facing a computer screen. This sitting position causes spinal misalignment and back pains.


I created an objective from my insights and observations:

Create an affordable office chair that supports the motion of leaning forward

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design inspiration

research

My design relied heavily on ergonomics so I spent a lot of time researching and experimenting with body positioning.

ideation sketches

miniature prototypes

Building miniature models helped me visualize my design in relation to space.

full-scale prototypes

To fine-tune the dimensions of my chair, I made full-scale prototypes and gathered feedback through testing.

evolution

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final product

体 (karada) supports prolonged sitting through healthy posture.

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seat frame, 10mm Ø

fiberglass seat

washable fabric cushions

aluminum base, 15mm Ø

rubber dampers

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Users can choose between two different sitting positions.