BREATHABLE FABRIC: Women ponytail sun hat is made of superior quick-drying polyester, skin-friendly, lightweight, breathable to wear. Mesh layers greatly promote air circulation and allow for moisture and heat to easily escape these hats; inner sweatband removes sweat from eyes and face; keep you cool and comfortable during the whole summer. PERFECT SUNSHADE HAT: Women"s sun UV protection hat features a floppy wide brim and UPF 50+ sun protection, which can block 98% of harmful rays; 3.35" wide brim provides a perfect shade to your face, neck and ears. Whether you take on an outdoor activity or work outside, this bucket hat will protect you from sun burn better. Necessary for your summer days. PONYTAIL SUN HAT: Designed with a ponytail hole on the back of the hat, which gives many conveniences to ladies with long ponytails or buns. You can easily put your hair through the hole and keep it off your neck. No more shackle for those who work outside or ladies who are outdoor sports enthusiastic. Press buttons on both sides of the bucket hat allow to change styles for more experiences. ONE SIZE FITS MOST: Casual style summer sun hat, snug and cosy fit. Hat Circumference: 21"-23", Hat Height: 4", Adjustable elastic buckle at the back of fishing hat is for adjusting the hat circumference to fit your head size. Freely Adjustable chin strap provides a comfortable fit and effectively prevents uv protection hat from blowing off in the wind. FUNCTIONAL & PRACTICAL: This wide brim sun hat is foldable and packable, easy to carry in your luggage, purse or bag, while still hold its shape. Great choice for regular daily use and outdoor activities especially like fishing, beach, hiking, kayaking, hunting, camping, gardening, travelling, pool, safari, golf and more.