Dual-Layer Fabric: The Under Armour Men's ColdGear Fitted Crew Apparel features a unique dual-layer fabric with an ultra-warm, brushed interior and a smooth, fast-drying exterior. This provides superior warmth and comfort in cold weather, keeping you dry and focused on your activities. Strategic Ventilation: The stretch-mesh back and underarm panels are strategically placed to provide efficient ventilation without sacrificing the warmth. This innovative design ensures breathability during high-intensity activities, helping you maintain an optimal body temperature. 4-Way Stretch Material: The 87% Polyester and 13% Elastane blend offers superior elasticity, facilitating unrestricted movement in every direction. Whether you are running, hiking, or working out, this advanced feature enhances your comfort and performance. Ergonomic Design: The seams of this garment are intelligently designed to stay off high abrasion areas, minimizing the risk of chafing and irritation. This feature ensures a comfortable wear all day, improving your overall experience. Dropped, Shaped Hem: The ColdGear Fitted Crew is not just about performance; it's also about style The dropped, shaped hem adds a stylish touch to the functional design, making it a versatile addition to your wardrobe.