Ergonomic design chair--more efficiently and comfortably, multi-function meet all kinds of body shape. Does your job require you to maintain eight hours or more per day Does your day involve too many sitting postures during your studies Do you know that sitting too much may be worse than smoking Maybe, yes, otherwise you will not look for a quality office chair with support! Product Name: Office chair material: metal Fabric material: PU leather Metal material: steel Product color: Black Chassis: thickened explosion-proof chassis Cushion: high density rebound sponge Fabric: high quality leather Handrail: fixed handrail Pneumatic rod: SGS certified pneumatic rod Casters: soft PU mute anti-skid wheel Five claws: steel feet Finishing height: 102-112cm Seat height: 47-56cm Gross weight: 17 kg Maximum load: 250kg Scope: bedroom, living room, study, classroom, dormitory, office, conference chair, reception room, etc. Features: 1. Lift function 2. Rotation function Package include: 1 x Office Chair 1 x fitting Note: 100% Satisfaction Guarantee. If you have any questions, please feel free to contact us, we promise to get back to you as soon as possible, and give you a satisfactory solution.