Molded foam seat slides forwards and backwards, raises and lowers. Customizable tilt tension to perfectly balance your weight, seat position can be locked or unlocked for flexibility or maximum support. Wide, five-wheel base for mobility and stability during multipurpose use. 3D armrests move left to right, up and down, and forwards to backwards for the perfect resting position. Adjustable lumbar support meets your back where you most need support. Wide, curved headrest raises, lowers and tilts up to 45 degrees back. 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.. Warranty: One year against manufacturing defects. Assembly required. Seat: 19.7 in. W x 19.7 in. D. Overall: 32 in. W x 26 in. D x 48 in. H (48 lbs.). 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.