Fit note: this rash guard has a fitted, close cut and runs small. Our supplier recommends choosing the larger size if your child is between sizes. As a height guide, size 8 fits a child about 134 cm tall, 10 about 140 cm, 12 about 146 cm, 14 about 152 cm, 16 about 158 cm, 18 about 164 cm and 20 about 170 cm. Measurements are taken with the garment laid flat and can vary by up to 2.5 cm because each piece is cut and sewn by hand.