Waterproof Protection Designed: This kids and youth arm cast cover protector fully sealed uses a unique flexible rubber that creates a vacuum and a securing plastic ring. Protects the bandage, wound, injury part isolated from moisture and water, keeps casts and bandages dry when bathing, showering, or other outdoor activities. Safe and Durable Medical Grade Material: The cast cover bag is made of reusable, durable, and thick material, high-quality PVC, polypropylene, and rubber that won't rip or tear. Reusable quality PE cover is for durable use. Kids Arm Cast Protector: Above the elbow, this 20 inches watertight arm cover is long enough to cover elbow and lower arm injuries. The width is enough for most kids and youth to slide their arm in or out easily. It is suitable for upper arm circumference between 6.2" to 14.5", and tight enough to protect your arm or bandage from getting wet while showering. Note: Please measure the maximum arm circumference before ordering (e.g., if you have a cast and bandage). Easy to Use: With this kids arm cast cover, it can protect your arm, hand, wrist, thumb, fingers, or elbow injuries or other injured parts on your arm. So, you can shower, bathe, or take part in other outdoor activities while recovering from injuries, surgeries, accidents, medical conditions such as rashes, burns, skin issues, wounds, and scratches.