Marmot Men's Bowls Flannel Long Sleeve Tee 100% Hollow Core Polyester Herringbone Flannel 5.3 oz/ yd Imported Quick-Drying and Wicking Soft, Comfortable, Mid - Weight Performance Woven Fabric with Herringbone Texture Technical Hollowcore Flannel for Durability and Thermal Properties Without the Weight Ultraviolet Protection Factor (UPF) 50 Durable Flat Felled Seams with Contrast Interior Stitch