Sealskinz Childrens Cast ProtectorsBrand: LimbO Sealskinz Cast Protectors are for use by children with leg casts. They allow a child with, for example, a below knee cast to play on damp sand on the beach. The Sealskinz is waterproof up to the cuff at the top and also breathable. This allows a child to use it when outdoors, keeping the plaster clean and dry without the fear of damage to the cast. The SealSkinz sock will stretch over the cast and can be pulled up to well above the knee.