Neoprene Imported Double Protection Against Solid Leaks – The Happy Nappy Duo features a unique two-layer system combining the trusted outer Happy Nappy with a soft, built-in inner diaper for ultimate leak security. Soft, Comfortable & Secure Fit – Crafted from premium 1mm neoprene, the Duo fits snugly at the waist and thighs to prevent leaks while keeping your baby comfortable and free to move. Reusable – Washable and durable, the Happy Nappy Duo replaces disposable swim diapers, saving money and reducing waste. Trusted by Swim Schools Worldwide – Recommended by baby swim programs for its superior design, leak protection, and long-lasting performance. Available in adorable prints and sizes 0–5 years. The Happy Nappy Duo from Splash About is the most advanced swim diaper on the market, featuring a unique lined inner layer that eliminates nasties from feces before they contact the water. It offers unbeatable protection for your baby and other swimmers without the need for disposable or additional diaper wraps. Reliable, long-lasting, and comfortable, it's the only swim diaper you'll ever need.