Self-assembly Adjustable seat height Adjustable backrest Hollow seat (for relaxed sitting position) Seat height: 41 - 54 cm (without foot ring) / 59 - 84 cm (with foot ring) Seat width: 46 cm Seat depth: 43 cm Back height: 30 cm Recommended sitting time: max. 8 hours/day Delivery time: 4 weeks Easy to assemble Color: black