This is an ultimate chair that supports your lower back, promotes good posture and makes sitting a real joy. The chair is well designed to follow the strictest industry standard. We have passed several tests including the BIFMA one so you can rest assure that the quality is excellent. Details: . Sturdy, high customization and breathable fabric . Ergonomic design brings comfort to boost your working productivity . 7-ways adjustable angle for the any sitting-posture Lifting capacity: 330 lbs.. . Seat size: 19.7x19.7 inches . Easy and very fast to assemble