Dervish Piston Half Footrest is a unique stool with a comfortable upholstered seat and backrest on an adjustable gas piston base which swivels and also adjusts easily from a counter height to a bar height with a lever that activates the gas piston mechanism. The solid steel round base is available in chrome or stainless steel. The seat has a steel structure with “S” shape springs for extra flexibility and strength. This steel frame is molded by injecting polyurethane foam. Dervish Piston Half Footrest is suitable for both residential and commercial use.