Master Massage Ergonomic Swivel Saddle Stool, Posture Chair with a Durable Pneumatic Hydraulic Lift, Sleek Black

Saddle Sear Design reduce painful pressure on your Back and Spine Adjustable Pneumatic-Lift Height Range - 52 to 69cm (ADA Compliant) 6.35cm of our Exclusive Small Cell Foam (denser than other foams) - delivers superior comfort for many years! Extra Large, Steel Mounting Plate under the seat - 2x larger than other stools; SAFER than regular stools! Seat Diameter: 38cm thick and full 360 rotation. Height: 52 to 69cm (adjustable)