Giantex Pu Leather Ergonomic High Back Executive Computer Desk Task Office Chair Black Sturdy and Anti-Rust BaseThe five star shaped base is super solid and stable. With the silver paint, it will not get rusty. With proper care, it will always look like as a brand new one. Ergonomically Designed High BackHigh-back design is ideal for big and tall users. It fits your body perfectly. Comfortably Upholstered Back and SeatThis executive chair is upholstered in bonded black leather and PU. It is comfortable to sit and rest. Pneumatic Seat-Height AdjustmentPneumatically adjustable seat meets the needs of a comfortable seat height for people of all heights. 360-Degree Swivel CastersSmooth-rolling caster wheels gives you convenience in working or resting.