Discover a brand NEW way to have fun in the sun with Colour Changing Disposable Swim Pants. Our baby-safe swim nappies cover and protect in the pool, ocean, lake (or puddle!) and feature special colour changing technology that interacts with sunlight and UV exposure. Colours appear and change while your baby plays outside! These comfy, slip-on swim nappies are made with sustainable core material, they won't swell or sag, and they offer UPF 50+ protection. Swim, splash and explore till you run out of giggles, baby, but you know what we say, safety first! Water resistant soft cover swim nappy. Frog design changes colour with UV exposure - about 20-30 minutes. Designs appear and change in sunlight.