Happy Nappy™ Swim Diaper
Experience the original and trusted reusable swim diaper with our award-winning Happy Nappy™. Since 2005, Splash About has helped transform baby swimming with its innovative Happy Nappy™ design, now recommended by many swim schools across the US & Canada.
Each Happy Nappy™ reusable swim diaper is made from soft, flexible 1mm neoprene with specialist waist and thigh seals designed to securely contain solid leaks. The contoured shape cups your baby’s bottom for a comfortable, close fit without restricting movement, so babies can kick, splash, and enjoy the water.
Trusted Leak Protection for Baby Swimming
Unlike regular disposable swim diapers, the Happy Nappy™ is designed to provide a secure fit around the waist and thighs, helping prevent solid leaks in the pool. The soft neoprene moves comfortably with your baby, while the specialist ribbed seals provide reliable protection without digging into delicate skin.
Durable, chlorine-resistant, and reusable, simply wash and wear again for swim lessons, vacations, and family pool days.
Complete Your Baby Swim Kit
The Happy Nappy™ is available in a wide choice of prints and sizes for babies and toddlers. Pair it with one of our baby wetsuits for extra warmth, or explore our complete baby swimming collection for coordinating swimwear and accessories.
Start your baby’s swimming journey with the original Happy Nappy™ reusable swim diaper – trusted by parents and swim schools for reliable protection in the pool
Happy Nappy™ Swim Diaper FAQs
The Happy Nappy™ is a single-layer swim diaper designed specifically to contain
solids, providing a secure and reliable fit.
The Happy Nappy Duo™ offers a similar fit but includes an additional inner layer, which has been scientifically developed to help protect against germs.
No. The Happy Nappy™ is designed to be used without any other swim diaper underneath and can be worn in this way for general swimming, inflatable pools or the ocean. However, some organised swimming classes require a double diaper system; in such cases, you will also need to purchase a Silver-Lining Diaper Wrap to wear underneath. This system can also make changing and washing a soiled Happy Nappy™ easier.
Our Happy Nappy™ requires a correct fit for complete leak protection. Since babies vary in size, it's essential to measure your baby accurately and consult the size guide for a snug fit around the waist and thighs.
Measure your baby while lying flat and not immediately after a feed. Take measurements around their tummy, across the belly button, and at the fullest part of their thigh. When worn, there should be enough space to fit a finger comfortably around the edges of the seal, with no red marks.
No. As with disposable swim diapers, the Happy Nappy™ does not hold in urine. It is designed to allow water to pass in and out of the diaper to prevent it from becoming waterlogged. However, it is incredibly reliable in containing solids
To keep your Happy Nappy™ in good condition, we recommend hand washing in cool water and drying away from direct sunlight. However, we understand that soiled diapers may occasionally require machine washing. If you need to machine wash, please do so at 85°F using a non-biological detergent. Please note that frequent machine washing may affect the longevity of the product.