Made of 100% Polyester Brim measuring at 2.5 inches Interior sweatband UPF 30+ sun protection Back hook and loop closure One size fits most up to 20 inches This lightweight cap is perfect for summertime fun. With its adorable Stitch graphic, this hat is sure to brighten up your little one's wardrobe. It's UPF sun protection is perfect for a day at the beach or a day at the parks. This hat not only contains a sweatband but is adjustable up to 20 inches. Warning: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.