Measure all around your chest just below your armpits.
Your natural height
If you fall between the sizes, go for the larger of the two.
Certified Organic Cotton Kids Striped Long Sleeve Tee, 155g/m2. Wash cool, hang dry. GM free. Not tested on animals. Does not contain animal-derived products. Printed in the UK with low waste printing tech. Made in a renewable energy powered factory audited for a wide range of social and sustainability criteria. GOTS DK25920