Waterproof Protection Designed: This kids and youth arm cast cover pretector fully sealed use a unique flexble rubber that creates a vacuum and a securing plastic ring. Protect the bandage, wound, injury part isolated from moisture and water, keep casts and bandage dry when bathing, showering or other outdoor activities. Safe and Durable Medical Grade Material: The cast cover bag made of reusable, durable and thick material, high-quality PVC bag, 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 17.5 inches watertight arm cover which is longer enough to cover elbow and lower arm injuries. The wide is enough for most kids and youth to slide their arm in or out easily. it is suitable for upper arm circumference between 4.0" to 13.5", 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.got cast and bandaged). Easy to Use: With this kids arm cast cover, it can protect your arm, hand, wrist, thumb, fingers or elbow injuries or other injured part on your arm. So, you can shower, bath or take other outdoor activities after recovering from injuries, surgeries, accidents, medical conditions like, rashes, burns, skin problems, wounds and scratches. Satisfaction Guaranteed: Customer satisfaction is our top priority. If you are not satisfied with VALLEYWIND cast protector for any reason, please contact us, and we will do our best to provide you with a satisfactory solution.