Constructed of hardwood solid Gas lift height adjustment handle Adjustable seat height from floor: 18" - 22" Swivel and five-prong tilt base with rocker tension adjustment knob Equipped with casters for convenient mobility. Never roll casters on unprotected hardwood or vinyl flooring Upholstered with 100% Polyester Cleaning code: S Dimensions(inches): 38.75Hx22.25Dx18.5W