The Pera Piston is a unique stool with an upholstered seat and backrest. It has an adjustable gas piston base which swivels and also adjusts easily from a counter height to a bar height with a lever. The weighty 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. The stool is ideal for both residential and commercial use.