Infant / Toddler Girls Mod Ultimate Swim Diaper and Tie Rashguard Swim Suit by Iplay Nylon Machine wash cold. Do not bleach. Dry flat. Do not iron or dry clean. Fabric is treated with a UV protection factor of 50+. Waterproof inner layer helps keep baby dry. Ultimate Swim Diaper has a super absorbent inner layer and a wick away lining next to baby's skin.