<p>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.</p> <p>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.</p> <p>Kids Arm Cast Protector: above the elbow, this 20 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 6.2\</p>