Size Fits for Most Kids: The shower cast covers size is Length 400mm, the dimensions on the top and bottom is 200mm and 150mm. Great suitable for most kids boys and girls knee and leg. Flexible and comfortable design with extra space for free knee movement for shower.Waterproof Seal: The child cast protector is fully sealed by a unique vacuum ring to block water, sand, dirt and grime from damaging the cast, reduce the number of dressing and you can normally bath. After each use, the seal regains its shape for extensive reusability.Widely Used: Reusable and comfortable design with extra space for free movement. Bathing, Swimming, Shower, Water sports, Whirlpools, Hot tubs. Any injury which requires a cast. Any leg or arm injury which requires bandaging. Going out in wet weather.Comfortable Material: The cast cover is made from Blue PVC outer ring + Matte silicone cover + PP protective cover, with extremely high tension. The elasticity is better, the lighter, the pressure at the seal is small, which make it more soft and comfortable.Easy to Put On/Off: The cast protector for shower adopt a high-elasticity soft material, making it simple to put on and take off. The center opening hole is stretchable, better fits your leg or arm size, and won't feel painful, keep blood circulation.