Most swimming pools insist that babies do not swim naked for hygiene reasons. Normal suits offer no protection and ordinary nappies hold water, weighing the nappy down. Bambino Mio Swim Baby Nappy offers a welcome alternative to ordinary baby suits and nappies in water. It has a concealed waterproof layer, leakproof legs and waistband. The lining of this swim nappy is cotton so that it is soft against baby's skin.