"This comfortable ergonomic office chair is made of PU leather and features a 4-way tilt adjustment with tension control. A chair like this is perfect for healthy sitting since it has an ergonomic design, adjustable armrests and headrests, and plenty of cushioning. It makes no difference whether you're at home or at work, in a meeting or at school, or even in the middle of a game. Product requires assembly Easy to assemble: all necessary parts and hardware included Ready to assemble construction, hardware included Features 5-star aluminum base Leather made of polyurethane Seat height can be adjusted. The seat pan is slid. The lumbar support pad can be adjusted in height. The density of molded foam on the backside Lift with gas, Armrest Measurements 107cm x 57cm x 57cm "