Is your Numberbug proud of how old they are? Let them tell the world with a ‘How Old Are You?’ Numberbugs Kids’ Hoodie. Perfect for a birthday party. Rough size guide: XXS - Age 1/2: To fit 37cm chest XS - Age 3/4: To fit 39cm chest S - Age 5/6: To fit 41cm chest M - Age 7/8: To fit 43cm chest L - Age 9/11: To fit 46cm chest XL - Age 12/13: To fit 49cm chest Material: 80% Cotton and 20% polyester Washing: Machine wash at 30°. Do not bleach. Tumble dry low heat. Low iron. Do not dry clean.