100% Polyester Strap with Velcro Hook and Loop Adjustable cinch strap around crown if the head Hawaiian flower pattern Flowers darken in presence of harmful sun rays Melanoma International Foundation approved UPF 50+ Blocks 99% of UV Rays Chin strap with velcro closure Fits most children ages 3-10 Adjustable sizing Fits most children ages 3 to 10 years UPF 50+ 100% Polyester 50-54 cm 2 3/4" Brim for maximum sun protection Very good used condition Pet free smoke free home