Baby sun hatComfortable and breathable material The hat is made of soft and breathable polyester fiber; UPF 50+ protection can block 98% of UV rays; the inside of the hat is made of high-quality quick-drying and breathable mesh, which is good for moisture absorption and perspiration, close to the child's skin, will not hurt the child and bring comfort to the child Wearing experience Size L (over 2 years old) head circumference is about 54cm/21 inches; the head circumference can be adjusted, please confirm the size you want before buying, and then choose the right size. Drawstring design The drawstring design at the back of the hat makes it easy to adjust to fit your baby's head of all sizes, allowing your child to play comfortably in the sun. Wide range of uses These hats are ideal for taking your child to the beach and outdoors in summer; they protect your child's head, neck, and eyes from the sun.