ColdPruf Men's Quest Performance Base Layer 1/4 Zip Mock Neck Top 85% Polyester/15% Spandex Imported Our most versatile layer, great for base layer, casual wear, or active wear 1/4 zip mock turtleneck with elastic thumbhole loop in sleeves for ease in layering Drop tail maintains coverage in various activities Tagless labeling and flat seems provide a smooth fit and extra comfort Moisture management wicks perspiration and dries quickly Featuring ColdPruf Technical Fiber formulated with Silvadur Intelligent Freshness to minimize odor and odor causing bacteria on fabric