The PCP 6230 Inflatable Ring Cushion helps relieve pressure 
      and fatigue troubling anyone who is required by illness,
      injury or occupation to lie or sit in the same position over prolonged periods.
      recovery, post-injury, limited mobility issues, and daily living aids
      Cover cushion with cloth to keep from direct contact with skin.
      In bed, use cushion under buttocks or knees to relieve pressure
      and tenderness resulting from friction with bed clothes.
      Can be used in leg elevation and as a backrest (against a straight back chair).