Amed Piston 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 stainless steel and black powder. The seat has a steel structure with “S” shape springs for extra flexibility and strength. This steel frame is molded by an injecting polyurethane foam. The Amed Piston is suitable for both residential and commercial use.