Lorell Adjustable Multi Task Stool,24"x24"x40-1/2"x50-1/2",Gray Adjustable Multi-Task Stools offer molded seat and back to allow comfort for all-day use. Durable shellback and seat allow for clean smooth lines. Adjustable back provides support where you need it. Functions include adjustable height, adjustable chrome footring, pneumatic seat-height that adjusts from 22" high to 32" high, back height adjustable, seat depth adjustable and 360-degree swivel. Abrasion rating is 30,000 cycles. Footring is height adjustable. Seat-to-floor dimensions are from 24" to 34-3/10".