Here’s the size chart for choosing a Seac UV-shirt for kids (unisex model). All measurements in the table are given as full circumference, so you can easily compare them with your child's own measurements.
This UV-shirt is designed to protect your child from the sun and should fit closely to the body for the best performance in the water. The material is stretchy, but because kids grow quickly, make sure to check the chest and waist measurements in particular. The sizes are based on age, but we always recommend measuring your child for the most accurate fit.