The Boss Web Chair belongs to Boss Collection by Boss Chairs The Boss Web Chair is upholstered with a unique mesh material which allows air to pass through, The back distributes weight evenly, and provides the perfect level of back support, The patented Web Tension Knob allows the user to tighten or loosen the tension of the mesh material with a few simple twists, This is a unique feature you will find only on the Boss Web Chair, The seat surface and the outer back areas are upholstered with genuine LeatherPlus, Pneumatic gas lift seat height adjustment, Adjustable tilt tension control, Large 27 nylon base for greater stability, Hooded double wheel casters, Adjustable heights armrests. Fabric Type Mesh, Cushion Color Black, Frame Color, Base Color or Wood Finish Black Office Chair 1