This heavy-duty, double braced throne has a hydraulically-operated base that can be height-adjusted with just a pull of the lever. Its oversized saddle-style seat has a comfortable cordura top and memory foam for constant comfort throughout the longest of sets. · Lare memory foam saddle seat with cordura top · Height adjusts via hydraulic lever · Top dimensions: 17-1/4 inch.W x 15-1/4 inch.D x 3-3/4 inch.H · Extends 20 inch. to 26 inch.