This cute sun hat has a UPF 50 sun protection rating, which means it will block 97% of UVA, UVB rays. Design features rounded crown, 4 inch wide shapeable brim and faux leather string trim that ties into a low profile back bow. Perfect for travel - hat may be gently folded and rolled to fit inside your suitcase, beach bag, purse or carry-on. One size fits all up to 23 inches. Includes FREE sizing tape, for use if hat is too loose. To reduce size and customize fit: simply apply tape to interior of hat, placed behind the sweatband. Wear sun hat while gardening, to beach, poolside, vacation, festivals and everyday. Available for a limited time. Stylish sun protection makes a great gift!