Splash About Happy Nappy Swim Diaper Blue Colbalt 4-5 Years NWOT Comfortable, secure and leak-free. Classic navy teamed with bright blue makes the striking Starlight Blue Happy Nappy a firm favorite for both girls and boys. Purchased for my son but never wore. Comes from a smoke free, pet free home The Happy Nappy from Splash About is an innovative reusable swim diaper that reliably protects against fecal leaks. Ergonomically designed, the Happy Nappy is shaped to cup baby’s bottom to prevent any gaping, whilst specialist waist and thigh ribs fit snugly, to form a seal that prevents any solids leaking out into the pool. Made from super-soft 1mm thick neoprene, the Happy Nappy swim diaper is designed to be gentle on baby’s skin. With no tight elastic, it has been developed to move as your baby moves, so it won’t leave red marks or chafe the skin. The Happy Nappy is reliable against leaks when worn without any other under-diaper. To make changing easier, however, or to conform to many swim schools' double-layer diaper requirements, we recommend our size adjustable under diaper, or cotton diaper wrap with liners. The Happy Nappy Swim Diaper is reusable and is chlorine resistant, so it won't lose its shape or protective elasticity when worn again and again. This makes it fantastic value for money, whilst also going a long way to help the environment, by lowering the number of disposable diapers in landfill.