Keep your cast dry while showering. The E-Z Stretch Arm Cast Protector is made from durable, reusable, and latex-free material. The waterproof cast protector to stretches easily over the cast and then self-seals tightly around the arm without straps or tape. This waterproof arm cast cover will not puncture or rip easily, and it can be put on with one hand. The waterproof cast cover fits most adults and children.