Softeze Ring Conv Comp Foam 15 3 4 x17 3 4 x4 Plaid Cvr Locator Aids 7 lpm typical * Sound Wall Transformers 7 lpm typical * Sound level 56 60 dBA * Power Consumption 80 watts maximum Medium * Has a fully adjustable internal buttress which ensures correct positioning and control of patella movement * Allows vertical tracking of the patella during vertical flexion extension * Assists in the treatment of patella problems including instability pain and subluxation (looseness) Compressed Foam * White * 15 3 4 x17 3 4 x 4 * Specially designed foam ring relieves pressure on sensitive areas * Molded high compression polyurethane foam affords seating comfort and durability * Enhances the comfort of any seating surface in your home office or in your car * Relieves uncomfortable pressure especially useful for hemorrhoid sufferers and new mothers * Features a removable washable polycotton cover *