One Size Fit Most: Sun hats for kids with elastic buckle on the back to easy adjust the hat circumference between 19" ~21", and it fit ranges from toddlers to kids and children. Come with an adjustable chin strap, which can be easy to slide up and down and locked to ensure that the summer fisherman hat will not fall in strong winds. Perfect gift for kids to outdoor play..Ponytail Hole Design: Ponytail opening in back is considerate design for girls to pull up your buns or ponytails to show off their cute hairstyles on hot summer days, while keeping their head cool in the summer. Compared with ordinary sun hat, it provides great ventilation and heat dissipation. The snaps on both sides also let your child wear the hat in different styles..UPF 50+ Sun Protection: This children's beach hat provides UPF 50+ sun protection and excellent UV protection function, effectively blocks harmful UVA and UVB rays. 2.7" wide brim will protect your delicate neck, ears and face from sun burn. The child can enjoy the outdoors happily in the hot summer activity..Great Quality: The kid's UV sun hat is made of polyester, which is soft, lightweight, quick-drying and comfortable to wear. The inner sweatband will absorb any excess sweat. Come with breathable mesh side panels and lining, it allows heat to escape, air to flow and always keep the head cool and ventilated. Durable materials and workmanship enable hats to grow with child..Foldable & Packable: kids summer hats can be folded into a smaller hat for easy carrying and storage, so girls' bucket sun hats can be easily put in backpacks and handbags, saving a lot of space. Perfect for outdoor, beach, gardening, fishing, camping, hiking, pool, travel, climbing, boating, park or any other outdoor activities. Let's go enjoy the nature!