Waist: 22cm-32cm/8.66"-12.6"， available to stretch maximum 60cm/23.6"Our swim diaper is fully adjustable， meaning there is no need to purchase multiple swim diapersThese diapers are suitable from birth and grow with your baby and toddler. Outer: 100% PULInner: 100% Nylon Mesh - which will catch any solids They have 3 rows of snaps on each side， allowing you to fully adjust the diaper to any size setting. They also have 2 rows of snaps at the front， allowing you to adjust the height of the diaper and fit around the legs.