Our ergonomic wood chairs are durable making them ideal for almost any environment. Our woods chairs are constructed with seven-ply furniture grade hardwood. These medium bench height chairs feature your choice of black rolling casters or black glides on a nylon reinforced fiberglass base. Foot rings are available in 18 1/4-inch diameter black nylon reinforced fiberglass or 18-inch diameter chrome. Each ergonomic chair is backed by our 15-year warranty, lifetime on the pneumatic lift.