Waterproof Protection Design: This kids and youth arm cast cover protector is fully sealed using a unique flexible rubber that creates a vacuum and includes a securing plastic ring. It protects the bandage, wound, or injured area by isolating it from moisture and water, keeping casts and bandages dry during bathing, showering, or other outdoor activities. Safe and Durable Medical Grade Material: The cast cover bag is made of reusable, durable, and thick material, including high-quality PVC, polypropylene, and rubber that won't rip or tear. The reusable quality PE cover ensures long-lasting use. Kids Arm Cast Protector: This 20-inch watertight arm cover is long enough to cover elbow and lower arm injuries. Its wide design allows most kids and youth to easily slide their arm in or out. It fits upper arm circumferences between 6.2" to 14.5", and is secure enough to protect your arm or bandage from getting wet while showering. Note: Please measure the maximum arm circumference before ordering (e.g., when you have a cast and bandage). Easy to Use: This kids arm cast cover helps protect your arm, hand, wrist, thumb, fingers, or elbow injuries, allowing you to shower, bathe, or participate in outdoor activities while recovering from injuries, surgeries, accidents, medical conditions such as rashes, burns, skin issues, wounds, and scratches.