Arm Cast ProtectorThe Seal Tight Easy application eliminates need for pumps, hook & loop closure straps and adhesive tapes that may irritate skin. It is made of TPE, high performance thermoplastic elastomer that stretches easily, folds compactly and maintains waterproof seal. Reusable. With normal care lasts three to four weeks. May be affected by chemicals and heat. What is the Cast Arm Protector? The Seal Tight Cast Arm Protector is a safe, economical and effective