Cushion Cover only Roho HP Heavy Duty 20 x 20 Nested Stools Left Side * 1 2 thick Select Ear:Left Ear Left Side * 1 2 thick wood base covered with 1 thick foam * Upholstered with black molded satin vinyl * With adjustable height bracket * Flips up and and out of the way * With recessed cupholder * Half tray hardware is made to fit either desk length or full length arm pads Variety of optional accessories to meet your individual needs 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 *