Cushion Cover only Roho HP Heavy Duty 20 x 20 Nested Stools Operate with one button Two 1 inch urethane Operate with one button Tiniest Hearing Aid Ever Protects ROHO cushions from rough wear and tear fluids and the degenerating effects of poor quality ozone * Helps protect the cushion from rugged use and every day wear and tear * Protects against incontinence with its fluid resistant material and durable construction * Although this new cover is ruggedly designed it still allows for the benefit of the therapeutic skin protection of the ROHO cushion * Allows for easy access to ROHO cushion valves and the ISOFLO Memory Control© on SELECT Series cushions with a double pull zipper *