The Original Flap Happy Hat UPF 50+: Designed to provide excellent sun protection from damaging UV rays. This hat shields the face and the flap covers the ears and neck from the harsh rays of the sun with an elastic band to help fit snuggly around the head. Perfect for any outdoor or water activity and practical and good looking for every day of the year. Your child will love to wear this hat for its comfort. Size XS recommended for 0-3 months. See size chart for reference.