i play. Baby Girls' Ultimate Swim Diaper 2 Piece Tankini Set 50% Nylon/50% Lycra Imported Machine Wash Stretchy two-piece tankini suit Comes with built-in ultimate swim diaper I play swimwear is made from specially treated fabric with a ultra violet protection factor of 50+ Waterproof outer layer, super absorbent inner layer and wick-away lining next to baby's skin Nylon, lycra with polyester lining