Details 100% cotton cord. Embroidered logo. Adjustable velcro strap. Baby Size: Fits a head circumference approx. 44cm. Approx 0 - 18months old. Soft velcro adjustable strap at back to allow for 4cm adjustment each way Toddler Size: Fits a head circumference approx. 50cm. Approx 1-3 years old. Adjustable slider at back to allow for 4cm adjustment each way Kids Size: Fits a head circumference approx. 54 cm. Approx 4-8 years old. Youth Size: Fits a head circumference approx.