Comfortable and stretchy fit with no chaffing, both in and out of the water. Easy to use! Hook & loop fastening means no mess at change time. Elasticated legs and waist to catch any accidental number twos. Available in two sizes: size 1 fits from 10-20lbs and size 2 fits from 20-35lbs. Not absorbent like a disposable nappy so won't weigh your child down in the water.