Packable: crochet raffia; packable for travel to your favorite destination Breathable: perfect for beach and resort vacations; also great for summer activities such as boating, biking, and hiking, gardening or simply sitting by the pool Wire brim: measures 3.5 inch Adjustable head size: integrated internal drawstring allows you to size this hat for your perfect fit Rate UPF 40, meaning this hat has excellent UV protection, blocking 97.5 percent or more UV radiation. A brimmed hat offers the necessary protection for your ears, temples, Cheeks and neck