Waterproof Mid-Arm Protector. SEAL-TIGHT Protector is a safe, economical and effective covering for dressings surrounding PICC lines and elbow surgeries. Open design allows user the freedom to use his/her hand. Easy application eliminates need for pumps, hook & loop closure straps and adhesive tapes that may irritate skin. Made of TPE, high performance thermoplastic elastomer that stretches easily, folds compactly and maintains waterproof seal. Reble. Not made with natural rubber latex.