Amazon.com: niuwa Womens Sun Hat Summer Outdoor UPF 50+ UV 。*Women\'s wide-brim sun hats with UV protection. 100% polyester *Fashion and vintage style. Fit for head circumference 21-23 inches. *The sun hat with a Stretch drawstring, can be attached to both sides, to keep the hat from flying off in the wind while boating, fishing, hiking, camping, biking, walking the dog, gardening, or outdoor yard activities. *Shapeable Wired-Brim - Quality wire built-in brim edge to make the wide brim stiff enough to be flipped up or down to adjust the look or coverage. The brim is large enough to shade your face, ears, neck, and part of your shoulder and also provide sun UV UPF protection. *Shapeable Wired-Brim - Quality wire built-in brim edge to make the wide brim stiff enough to be flipped up or down to adjust the look or coverage. The brim is large enough to shade your face, ears, neck, and part of your shoulder and also provide sun UV UPF protection. *An ideal choice for your summer and spring headwear. This lady-crushable summer and spring hat is designed so that it never goes out of style. The wide brim gives you a nice shade when you are going out for a walk in the daytime.