I play.® is the original Swim Diaper manufacturer and has a patented three-layer design. The wicking liner helps prevent diaper rash, the inner absorbent layer helps protect against messes outside the pool, and the waterproof outer layer works with the snug-fitting waist and legs to provide secure protection from unsanitary and embarrassing accidents in the pool. No other diaper necessary! Trim, lightweight diaper encourages swimming; Easy-lock snaps Snug fit helps contain solid matter & is approved for public pools