UV Sun Protection:Made with water-repellent nylon fabric.UPF 50+ sun protection fabric block 98%+ of damaging UV sun rays One Size Fits Most:Adjustable chin cord keep your hat safety in windy day, adjustable buckles at back for well-fitting Moisture Wicking:The breathable and cooling nylon fabric feature good moisture-wicking performance,and inside sweatband works to help keep your head dry and comfortable 2.5"/6.5cm short brim keeps the sun from your face and offers great protection from the damaging rays. Ideal for wearing in outdoors. It is a perfect hat for hiking, camping, fishing, tourism, gardening, beach, pool, park, race day events or any outdoor sports and activities