Taking cues from origami and architectural cable structures, Holland-based designer, Yuya Ushida, created a furniture constructed from 8000 chopsticks that switches from a chair into a couch and vice versa just by the act of pushing and pulling.
SOFA_XXXX, as its name implies the cross-cabling system, consists of 4 different lengths of sticks, connective rings and joints assembled to form a strong structural lattice that expands and retracts. The chair/couch also adjusts to proper seating heights depending on its use.
Study on measurement of depth and seat height.
elevations on the chair heights
Images courtesy of Yuya Ushida