The Oasis chair is a stylish and ideal chair for any type of work environment. The mesh finish provides the ultimate comfort and breathability | The Donati Mechanism allows for the chair to be set to users' preference, further re-enforcing comfortability, support, and user-friendliness | Donati-Dopo Weight Sensitive Mechanism With 5 Positions | Black Korean Mesh Back Rest | Black Korean Mesh Seat Pan | Height Adjustable Nylon Arm Rests | Black 5 Star Base With Black 60/25 PU Castors | 135kg Weight Rating | Backed by a 10 Years warranty