This Men's Fairfax Midweight Flannel Long-Sleeve Shirt will keep you warm and dry on and off the trails. UPF 50-rated double-brushed fabric blocks the sun's harmful ultraviolet rays and will dry twice as fast as cotton. Made from recycled Marmot Upcycle Product, this shirt reduces environmental impact, meeting Bluesign environmental standards. Bluesign Approved Fabric. Durable, Midweight Performance Double Brushed Flannel. Marmot Upcycle Product with Recycled Polyester from Post Consumer Plastic Bottles. Polyester for Quick Drying. Ultraviolet Protection Factor (UPF) 50. Quick-Drying and Wicking. Double Brushed for Added Comfort. Durable Flat-Felled Seams. Shirt Tail Hem with Single Chest Pocket. Regular Fit. 57% Cotton 43% Recycled Polyester Midweight Twill Weave Flannel 4.3 ozyd. Center back length: 31 in. Weight: 10 oz (283.5g). Machine wash. Imported.