Cinch this hat under your chin, then dive into your day without a worry in the world. Relief from the sun for mornings on the boat and an afternoon hike to your favorite swimming hole. The Burton Greyson Boonie Hat is made of 3L lightweight ripstop with water-resistant coating. This bucket-style hat has a breathable mesh internal sweatband to help keep you comfortable under intense heat. The shock cord with cord lock tightens under your chin so a gust of wind won't steal your shade.