Breathable Fabric: The women's sun hat is made of high-quality quick-drying polyester, which is lightweight and breathable. There is a breathable mesh layer inside the women's sun hat. The women's beach hat can greatly improve the cooling effect. Ponytail Hole Design: The ponytail hat brim is large enough to cover the forehead. In particular, the ponytail opening on the back is a thoughtful design for women. Adjustable chin strap for fixing the sun hat, especially on windy days. UPF50+ Sun Protection: The wide-brimmed women's hat provides the best UV protection, effectively protects your skin from the sun, and covers your face and back of the neck. Bring you unprecedented feeling and beauty. Foldable and Portable: The women's beach hat can be folded into a small top, and the women's sun hat with ponytail hole is very convenient to put into the bag. The women's sun hat with UV protection wide brim is the perfect hat for the beach, fishing,park, hiking, camping, travel, hunting or any outdoor sports and activities. ONE SIZE FITS MOST: Women's Folding Sun Hat Circumference: 21" - 23", Hat Height: 4.33", Brim Length: 3.35", Chin Strap Length: 12.99". One size fits most women.