This cute hat will protect your little one from the harmful rays. UV Ignite Ink blue sharks on brim darken when exposed to sunlight - a fun reminder it's time for sunscreen, sunglasses and UV protective apparel. It's made from ultra protective micro-fiber and mesh (mesh portion not UPF rated) which makes it lightweight. Perfect for any outdoor activity. 2¾ (in) brim for maximum sun protection. It comes with bungee to adjust circumference of hat. -Adjustable one size -Brim (in): 2¾ -Circumference (in): 19½ - 21¼