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Master Massage Hydraulic Massage Stool, Black (91555)
- Extra-Large, Fully Rotating Seat - 15" Diameter; larger than most seats!
- Adjustable Pneumatic Height Range - 17" to 23" (ADA Compliant).
- Pneumatic Adjustable Height Mechanism - same as office chairs!
- NEW Soft Polyurethane Wheels - maneuvers smoothly over hardwood floors and carpets!
- Five Point, Dual Swivel Casters - provides easy movement & extra stability!
- 4" of our Exclusive Small Cell Foam - delivers superior comfort through the years!
- Extra Large, Steel Seat Mounting Plate - 2x larger than other stools; maintains durability and safety!
- Foam Cushioning System is permanently molded to seat base - will last for years without looking worn!
- Hypoallergenic, CFC-free, oil & waterproof upholstery.