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, 2T fits a child about 92 cm tall, 3T about 98 cm, 4T about 104 cm, 5T about 110 cm, 6 about 116 cm, 6X about 122 cm and 7 about 128 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.