UPF 50+ SUN PROTECTION 5.5\" Wide brim sun hat with removable neck flap and breathable face flap provides great UV protection to protect your face, ears and neck from harmful UV rays and annoying insects bites during outdoor activities. Women sun flap hat has good performance with strong anti-uv protection and provides 360 degree sun protection. Your ultimate outdoor companion.PERFECT SIZE Head Circumference is 21.26\" - 24.41\". Adjustable velcro on the back for a snug and custom fit, one size fits most women. Adjustable long chin strap with cord-lock lets you customize the fit and keeps the hat from being blown away on windy days. The ponytail opening at the back is considerate design for women.VERSATILE FUNCTION The neck flap and face mask are easily detachable by the buttons. The crown can be zipped off to be a sun visor. You will love the fact that it\'s used as a baseball cap or a visor hat. Such smart design enables you to complete any outfit on any occasion only with this one hat. Choosing the most suitable type depends upon your protection needs and activities.LIGHTWEIGHT & BREATHABLE Womens outdoor sun hat is made of high quality polyester fabric, ultra-light, breathable, waterproof, quick-drying and comfortable to wear. The moisture wicking sweatband is designed for quick perspiration evaporation to keep your forehead dry. Special net mesh keeps you cool, and waterproof coating makes it usable when meet drizzly rain.FOLDABLE & PRACTICAL With portable and lightweight design, you can easily roll it into a compact size, which is very convenient to put it into any purse, backpack or handbag. Summer sun hats are the best choice for regular daily use and outdoor sports activities, such as fishing, climbing, hiking, gardening, camping, traveling, boating, hunting, beach, park, golf, tennis, safari,etc.