Features: ONE SIZE FITS MOST - Our casual style hat is comfortable fit. Its head-circumference is 22-23inches. Brim Length: 3.5 inch. With rear adjustable elastic drawstring to fit most adults. SUN-PROTECTIVE - Made of high-quality polyester fabric, our protective hat is thin, lightweight, breathable and quick drying. Brim length is 3.5 inch, wide enough to protect your face and neck from the sunlight and UV rays. ADJUSTABLE BREATHABLE - The ponytail hole design is nice for summer when it is too hot to have hair down for a long time. You can tie your hair up into a ponytail and put it through the hole. You will get cool with this special design. Adjustable chin straps effectively prevents your hat from blowing off in the wind. With mesh panels, ventilated, cool and breathable. LIGHTWEIGHT FOLDABLE - This hat is foldable and space saving. Packable, lightweight and flexible, it can be easily put inside your bag and carry for trips and travel. WIDELY USED - It is widely used for fishing, camping, hiking, mountaineering, self-driving tour, boating, hunting, cycling, doing yard work, field research and other outdoor activity.