Features Pera Piston is a unique stool with a comfortable upholstered seat and backrest on an adjustable gas piston base that swivels and 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. Pera seat is upholstered with a removable velcro-enclosed leather, PPM, or wool fabric slipcover. The stool is suitable for both residential and commercial use. The minimum order quantity for "Special Order" colors is 8. Highlights Assembly: Light assembly is required. Style: Contemporary Arms: Without Arms Backrest Height: Regular Base / Frame Material: Metal Upholstery Material: Eco Leather / Leatherette, Genuine Leather, Fabric, Wool Product Grade: Commercial, Residential Warranty Length :1 Year Weight Capacity: 350 lbs Product Weight: 20lbs Commercial Warranty: Yes Dimensions Overall dimensions: 31"-39" H x 16.5" W x 16.5" D; Base D: 16.5" Seat height: 23"-31.5"