japanese-based designer luka yasukawa’s utena chair is a shell-like structure that adjusts to a person’s body when they sit on it. comprising acrylic packed with PVC and this interesting yet very easy mechanism, the chair actually gets sturdier when weight is applied.

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 1

 

 

the final version of utena — the name comes from japanese and means a calyx of a flower — is made of synthetic leather with pockets to insert the acrylic strips in, so they can be replaces in case they break. yakusawa’s chair is easy to use and can be folded up. 

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 2
utena

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 3

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 4
detail

 

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 5

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 6

 

video by 安川流加

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 7
PVC prototype

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 8

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 9

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 10
detail

 

 

luka yasukawa's utena chair changes its shape to a stable structure when a load applied - 11
process