Having a comfortable fit is important to us. We work with customer feedback, real babies, and standard forms to make sure we have the best possible sizing. Our packaging includes relevant sizing guides to help customers choose the best fit.

Children grow at their individual pace, so weights and measurements may vary by age. Measure your child’s waist and legs without a diaper on for best estimate of appropriate size. Measure your baby’s waist at their natural waistline just above the hips, and legs at the crease of your baby’s leg between upper leg & groin. For secure protection, swim diapers should fit snugly around the legs and waist to hold solids, but not too tight to leave indentation marks in the skin. Two fingers should comfortably fit between the skin and stretched garment. Sizes may run small.

Measurements are approximate and are used to help determine size choice. How to measure foot length: Place ruler on the floor and measure from the back of the heel to the longest toe.

Measurements are approximate and are used to help determine size choice. How to measure head circumference: Measure around the most prominent part of your baby’s forehead, just above the eyebrows, around the widest part the back of the head.