The best way to find correct sizing is to choose a similar item (preferably swim) that fits your child well and measure that piece laid flat. Then compare them to our measurements.
Keep in mind swim fabric has stretch but also becomes looser when in the water. We designed our swim to fit snug.
You can size up when in doubt, but we do not recommend sizing up several sizes above your child's current size.
Our one-pieces fit true to size. We suggest buying your child's current size.
Measurements below are in CM.
Machine or hand wash cold. Lay flat to dry. As with all swimwear, please take care not to have your child rub garment on rough surfaces. It will cause the fabric to snag or pill.