The Relief Ring medical cushion is shaped for maximum relief of bedsores, post-operative pain and other debilitating painful conditions. The chair cushion is specifically designed to provide pain relief to sensitive areas. The Ring Cushion is produced from pure natural latex - harvested by tapping the milk (sap) of the small tropical tree Hevea Brasiliensis. No Chemicals are needed to stabilise the rubber, and the intrinsic colour is also retained. Latex is bio-degradable, naturally!