Beach caps with 10cm wide brim and 20cm long neck flap, full coverage to protect sunshine from your kids' head, face and neck, offer all day UV protection, perfect for summer outdoor activities. Sun hats with elastic buckle on the back, it can adjust the hat circumference between 48-54cm. One size suits for 3-12 years , ensure a great fit over multiple seasons as your little one grows. Ponytail hole on the back is specially designed for girls with long hair. There is also a whistle at the bottom . Summer hat for girls is made of skin-friendly, soft, waterproof, quick-drying fabric. Sun hat brim is waterproof to keep its brim not flop down when gets wet. Even if the hat is wet with sweat or light rain, it will dry quickly. The lightweight sun hat can be folded to save space in backpack or beach bag, easy to carry while still hold its shape.