Specification Model BW HOC4Color BlackGreyMaterial Mesh PUWeight 16 4KgLoad 300 lbsFeatures Super large Tilt Rocking Function Max backward tilt angle up to 150° Support tilt lock if you want to unlock please sit with a backward force until hearing a click Adjustable Height 360°Swivel Chair height adjustment scope 45 0 52 50cm Ergonomic Design Backrest and seat cushion are made of strong elastic breathable mesh thick resilient and Breathable Adjustable Lumbar Suppor Fit your back in real time Upright High Backrest RemovableAdjustable Headrest and 2D Full PU Adjustable Armrest Stable Firm Structure Thick Iron Core Three degree Gas Cylinder Supports up to 300 pounds Smooth rolling PU Caster silent durable scratch proofPackage 1 Office Chair★ Please allow 1 3cm error due to manual measurement Please make sure you do not mind before you bid ★ The colors may have different as the difference display please understand