"First came the Adventure Hat, then the Ultra Adventure Hat, and now, introducing the Sunday Afternoons Ultra Adventure Storm Waterproof Hat, a clear contender for the title of World's Best Rain Hat. Featuring 100% waterproof seam-sealing technology, this hat is easy to fold or stash in your pack, and perfect for backpacking or hiking in the rain. This waterproof Sunday Afternoons hat breathes, fits comfortably, and has a chin strap to stay put in high winds. A wicking mesh liner prevents excess sweat from reaching your face. Reflective details enhance visibility in low light. Wherever your adventures take you, this hat will keep you dry. Weight: 2.9 oz. The exterior is made of 78% nylon/22% polyester, and the lining is 100% polyester. Imported.Manufacturer style #: S3A01558B. Exterior: 78% nylon/22% polyester Liner: 100% polyester 100% waterproof Fully taped seams Reinforced brim structure Breathable 3-1/4"" reverse split brim 6"" neck cape Reflective details Integrated wicking mesh liner Adjustable Packable UPF 50+ sun rating"