Unique in its design, The Boss Web Chair by Boss Office Products has a breathable backing with a patented "Web Tension Knob" that gives users the ability to tighten the tension of the mesh backing for a firmer or softer feel. The height is also adjustable using the pneumatic gas lift. Mild soap and water is all you need to clean this all-black office chair. The seat itself is able to hold as much as 250 pounds and users will find assembly is a cinch, even for a novice. The hooded double wheel casters are an added bonus that makes it easy to move around when in the chair.