Review on High-Performance Rokka Rolla Stretch Clothing for Boys’ Surfing and Swim by Andrew Frison

For people with kids to help with the sizing: My son just turned 4 years old he's quite tall (90% in the chart) so he's wearing a size 5 .I ordered him a small one. They tie well enough to fit his small waist. I would say if your child is average height and 4 years old, buy the XS. If it's between a size 5-6 I would go for Small. The colors are excellent, the quality is excellent, the purchase is successful.