Breathable & Comfortable: The mesh panel and inside sweatband works to help keep your head cool and comfortable in hot summer days. Adjustable & Unisex: one size fits men's and women's head. Adjustable chin strap holds the hat in place on windy days. Packable & Lightweight: The only sunhats you need for any adventure! You can trust our sun hats to keep you heat protected Lightweight & portable, you can easily fold & fit it into any purse, backpack, or carry bag.