The happy nappy costume diaper combines all the safety features of the happy nappy and the cute styling of a girls swimming costume. It seems only yesterday that splash about invented the first ever neoprene swim nappy, the happy nappy. We're now almost 10 years down the line and still to this day, we remain the world's market leader and most trusted brand for this award winning swim nappy we're pretty proud of that fact. Recommended and insisted upon by UK swim schools, our neo nappy, the happy nappy, is the most essential item in your baby swim kit. Made of 1mm premium quality neoprene and finished with snug fitting, deep bands of fabric with a high rubber content (to keep all nastiest inside and ensure a leak-free swim), the happy nappy can be worn with or without a disposable swim nappy (though a liner is advised for cleaning). Better still, care of your happy nappy couldn't be simpler: After use simply rinse, roll and reuse.