This heavy duty, double braced throne is built to withstand the roughest treatment. The durable, vinyl motorcycle-style top has thigh cutouts and memory foam, allowing maximum mobility and comfort. Adjust the height by spinning the top in either direction and lock it in place. The adjustable backrest provides lower back support for long playing sessions. · Memory foam saddle seat with cordura top · Includes adjustable backrest · Top dimensions: 18-3/4 inch.W x 15-3/4 inch.D x 5 inch.H · Extends: 21 inch. to 27 inch. · Heavy duty double braced base: B9608