From chilly afternoons on the trail to brisk walks to the gear store for your next hike, the midweight Women's Bridget Long-Sleeve Flannel Shirt will keep you warm. You don't have to hide under the treetops on sunny days, thanks to the built-in UPF 30 protection. Reduce your environmental impact with Marmot UpCycle® fabric, which is made from post-consumer plastic bottles that are recycled into quick-drying polyester fabric then blended with cotton.