Yaheetech Modern Swivel Office Chair Faux Leather Home Computer Desk Chairs on Wheels Black Package included: 1 X Computer Chair 1 X The Assembly Instruction Total height adjustment: 33.1-39" , Seat height adjustment: 18.5-24.4", Backrest size: 15.7 x 15.7", Seat size: 15.7 x 16.1", Seat thickness: about 3", Armrest Height: 6.3" This is a Modern Designed Swivel Computer Chair with Thick Seat, Back and Armrest for Home Office to Use Come with Adjustable Height Gas Lift Base, 360 Degree Swivel Seat and 5 Pieces Castors Easy to Move Made From High Quality PU Leather and Steel Very Sturdy and Easy to Clear Max. Load (Approx.): 264.6 Lb Size: 21.7x20.5x( 33.1&#034; -38.6)&#039;&#039;(LxWxH) G.W.: 20.94 Lb PU &amp; Electroplating Steel ERGONOMIC DESIGN: built with armrest for extra comfort MORE COMFORTABLE: PU provides enough comfort The height can be adjustable from 33.1&#034; to 38.6&#034; to meet your different needs. Plated Handrails,beautiful and durable Sitting full,soft touch High quality materials,fine workmanship Easy to lift,free to rotate Rubber pulley,no injury floor Disc rubber ring,non-slip scratch Handrails made of high strength electroplating beautiful curve fit arm,can effectively relieve arm wrist fatigue Certification Gas Rod : Lifting function-The lift of the seat is mainly supported by the pneumatic bar. Pneumatic rod products through the quality system certification of safe and durable,not cut corners,safety responsibility is more important than Taishan,are certified stamps. Fine Sewing Edges Still Look BackThe design of the tofu block shape,the chair surface more flexible,beautiful and generous,suitable for open scenes Jingjing Yan Line display Jingjing Handrail show:The use of the electroplated joint handrails,dirt,durable surface,in a variety of enviroments durable Extra high elsatic sponge filled with cushion,density and high flexibility,shaped comfortable,high permeability,durable ERGONOMIC DESIGN: built with armrest for extra comfort MORE COMFORTABLE: PU provides enough comfort Rubber rulley quiet and durable,stable bearing strong,excellant material,no ingury to floor EASY TO MOVE AROUND: 5pcs 360 swivel castors STURDY &amp; STABLE: fantastic star base made of steel Used as a computer chair, staff chair, class chair for teenagers, makeup chair, movable bar stool etc. Used as a computer chair, staff chair, class chair for teenagers, makeup chair, movable bar stool etc. Modern simple style fits any decor, for domestic/office/entertainment centers