Our ergonomic wood stools are durable and offer a 360° all-around height adjustment ring that can be operated from any position. These medium bench height stools offer several customizable options, including your choice of casters or glides on a nylon-reinforced fiberglass base. Optional foot rings are available in 18 1/4-inch diameter, black, nylon-reinforced fiberglass or 18-inch chrome. Each ergonomic stool is backed by our 15-year warranty, lifetime on the pneumatic cylinder.