éFeature Positioning Design:trim and attractive, having a terrific fit on any babies polyester PUL outer layer:holding solids Interior Polyester:easy to clean up, offering comfort against baby?¡¥s sensitive skin 3x3 snaps:to adjust the size Elastics waist and legs: provides a secure, stretchy fit and easy on and off Size Weight: S(10-18lbs/4.5-8kg), M(18-30lbs/8-13.5kg), L(30-40lbs/13.5-18kg) Waistline: S(20-35cm/7.8-13.7''), M(24-44cm/11.8-22''), L(30-56cm/14.9-25.9'') Height: S(11-26cm/4.3-10.2''), M(14-28cm/5.5-11''), L(18-30cm/7-11.8'') Material Outer: 100% Polyester with PUL Inner: Polyester Mesh Use: Adjust to fit baby. A snug fit in the legs and waist are key to avoid leaks. Package: 2 swim diapers Care Knock solids into toilet,store in dry pail. Hand/machine wash cold/warm on gentle cycle. Line dry/Low tumble dry only. Friendly Reminder These one size swim diapers are comparably small, if your baby is bigger or need more room to grow up, we would advice you can visit our new larger size swim diapers- ZSW series. Having happy shopping experience!é