"This Whiteside Convertible Creeper Seat easily converts from a creeper to a comfortable seat with back support. Six 2.5in. oil-resistant rollers provide smooth mobility. U.S.A. Dimensions L x W x H in. 40 x 17 x 5, Adjustable in. No, Capacity lbs. 570, Wheel Thickness in. 3/4, Foldable No, Ground Clearance in. 2, Material Polyolefin, Padded Yes, Caster Size in. 2 1/2, Wheel Diameter in. 2 1/2. Positive locking mechanism with push-pin release Rugged 3/4in. frame with rust-resistant finish 2in. ground clearance 570-lb. capacity"