Giantex Modern Ergonomic Mesh High Back Executive Computer Desk Task Office Chair Black Ergonomically DesignedExecutive high-back chair features a mesh back chair, mesh fabric seat and ergonomically designed high back for natural curvature of a person's back. 360 Degree SwivelHeavy duty chair base with castors for greater stability, 360 degree swivel wheel and chair can be more flexible in the working space. Adjustable HeightThe pneumatic gas lift easily and effectively adjusted from seat to desk on workstation, the height is adjustable from 42" to 46". All-Mesh BackThe expansive mesh back is well supported by the plastic frame. This allows free circulation and fresh air while abating sweat build-up. Easy to AssembleThe Giantex high back computer chair is easy to assemble and the all required accessories are included. You can quickly assemble the item and use it in a clear and easy-to-understand manual.