Gakko 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 chrome or stainless steel. The seat has a steel structure with “S” shape springs for extra flexibility and strength. This steel frame molded by injecting polyurethane foam. Bottega seat is upholstered with a removable velcro, enclosed leather, PPM, leatherette, wool as well as Camira organic wool slip cover. Gakko Piston may be upholstered with variety of other colors as a special order with a minimum quantity required. The Gakko Piston is suitable for both residential and commercial use. Gakko Piston is designed by the sohoConcept team. and commercial use.