Waterproof Protection Designed: 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 bandages, wounds, and injured areas 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 PE cover ensures long-lasting use. Kids Arm Cast Protector: Above the elbow, this 20-inch watertight arm cover is long enough to protect elbow and lower arm injuries. The wide opening allows most kids and youth to easily slide their arm in or out. It fits upper arm circumferences between 6.2" and 14.5", providing a secure fit to keep the arm or bandage dry during showers. Note: Please measure the maximum arm circumference before ordering, especially when wearing a cast or bandage. Easy to Use: This kids' arm cast cover protects the arm, hand, wrist, thumb, fingers, or elbow from water during recovery from injuries, surgeries, accidents, or medical conditions such as rashes, burns, skin issues, wounds, and scratches. It allows for comfortable use during showering, bathing, or outdoor activities.