manmade sole Upper: One Piece Molded, seamless, ultra lightweight, highly flexible, soft EVA material Soles: Shock Absorbing, Lightweight, Flexible Traction soles Footbed: Padded,Contoured, Extra Comfort Hook-and-Loop Closures: Adjustable for a more secure fit, waterproof, easy on-and-off Water Friendly: Waterproof, ultra-soft and thickened EVA foam provides your child daily comfort for any occasion!