Compression fit. ColdGear dual-layer fabric provides a durable, smooth, fast-drying exterior - use for outdoor activities when the weather is cold. Mock Turtle collar. Soft, brushed interior traps warmth without adding bulk. ColdGear Polyester & Stretch Elastane blend fabric. Super tight, compression fit snugs the body so it can do its work. UA ColdGear features a two layer fabric system. The soft, brushed interior traps warmth without adding bulk. The smooth, exterior layer wicks perspiration away from the body, and is quick drying. 4 way stretch material moves in every direction. Stretch mesh back & underarm panels provide strategic ventilation without sacrificing warmth. Mock Turtle collar provides extended protection from the elements. Anti Odor technology prevents the growth of odor causing microbes. Ergonomic design keeps seams off of high abrasion areas for reduced chafing. Embroidered Under Armour UA logo at the right center mock collar. Available in 4 solid colors. Mens Sizes S ‐ 4XL.