Seriously lightweight, this hat is your go-to for exposed miles on the trail. It&&';;s designed to keep you cool, covered, and locked in-no matter how strong the sun gets. We love it for: trail running and sun protection 92% polyester & 8% spandex Mesh side panels: 100% polyester Lightweight & breathable 3.5" brim Moisture-wicking interior sweatband Drawcord & toggle