【Sun Protection】Made with high-density sun-protective fabric, effectively blocks over 99% of UVA/UVB rays. The 35cm ultra-wide brim design not only covers the face but also protects the neck, so you don't have to worry about sunburn even during long outdoor activities. It provides an all-weather protective barrier for any occasion, such as beach vacations, mountain hiking, and daily commutes. 【Detachable Mask Design, Peace of Mind with Double Protection】The upgraded detachable mask wraps around the face 360°, blocking UV rays and filtering out allergens such as pollen and dust. Made of soft, breathable, and skin-friendly material, it fits the face without tightness and maintains smooth breathing. Especially suitable for the spring allergy season, sandy weather, and dusty environments, making outdoor activities more comfortable and worry-free. 【3D Breathable Structure, Say Goodbye to Stuffiness and Discomfort】Conventional sun hats tend to be stuffy, but this sun protection hat adopts a 3D breathable mesh design, promoting air circulation and quickly dissipating heat and sweat. The nose vents + upper heat dissipation layer provide double protection, giving you a refreshing and non-sticky feel even after wearing it for a long time. 【Adjustable Head Circumference to Fit Your Head Shape】The fit is the key to a comfortable hat! The built-in elastic band and adjustable drawstring adapt to various head circumferences, providing a secure fit that won't loosen. It is windproof and non-slip, so it won't fall off even on windy days. Suitable for both men and women, it doesn't put pressure on the head even after wearing it for a long time, making your outdoor experience more relaxed and comfortable. 【Moisture-Wicking & Quick-Drying + Machine Washable, Easy Care, Peace of Mind】Adopts high-tech moisture-wicking and quick-drying fabric, quickly evaporating sweat, keeping your head dry and comfortable without stickiness. It is also machine washable, resistant to deformation and fading, and maintains its like-new beauty even after repeated washing. Whether you sweat after exercise or get dirty with dust, you can easily clean it, keeping your sun hat always clean and hygienic. Please be assured that there may be slight creases due to compression during transportation. Simply place it on a flat surface for a while, or lightly weigh it down to restore the hat to its original beautiful shape.