ColdPruf Men's Quest Performance Mock Long Sleeve Shirt - Built strong enough to withstand the harsh winter wilderness, but able to keep you comfortable in it. So Versatile! Wear as a base layer or as a casual mid or outer layer. Single Layer Engineering ColdPruf Technical Fiber Polyester with SILVADUR Intelligent Freshness Controls odor and inhibits bacterial growth on fabric Wicks and aids in moisture evaporation Brushed inside for warmth and comfort 85% Microfiber Polyester/15% Spandex Fabric Weight: 184g Extended body and sleeves for ultimate athletic fit 1/4 Zip Mock Turtleneck Hemmed Cuffs Drop tail Tagless and Flat Seams for Added Comfort Style: 82Z