Features: -Size 0-6 months = with drawstrings and Velcro at the back -Size 6-24 months = without drawstrings and with adjustable plastic closure at the back Size Chart: 0-6 months = 38 - 42 cm 6-24 months = 44 - 50 cm *Sun protection products (spray or lotion) may affect the condition of your cap. It is very important to remove the cap from the head when applying sunscreen.