Full Protection: features 50+ UPF fabric which block 98% of UV rays. This flap hats with wide brim (5.7 inch / 14.5cm) will keep your face, ears, neck and the back of your head shaded at all times. Detachable Flaps: the flaps provide additional protection for for your face, ears and neck, which can be removed when not in use for portability. Polyester: lightweight, quick-drying, water and stain resistant. The moisture wicking sweatband keeps sweat out of your eyes and makes your head breathable in sunny with strong sunshine. One Fits All: velcro back band is?adjustable from 20?? to 23??(51-58cm) and chin strap provide a comfortable fit and keep your hat from being blown away on windy days. FUNctional: whether you are out walking, hiking, fishing, playing golf, gardening, sightseeing, on the beach, at a ball game or working outdoors, this hat has you covered.