A reinvention of Under Armour's most versatile base layer yet, the updated Base 2.0 Long-Sleeve Crew Shirt is a must-have for any athlete who refuses to let winter weather hold her back. Midweight 93% polyester, 7% elastane ColdGear thermal grid fabric traps heat in tiny pockets to provide exceptional warmth. Quick-drying construction transports moisture away from the skin to keep you drier, lighter, and more comfortable. Four-way stretch fabrication allows greater mobility and maintains its shape, while antimicrobial technology helps fight odors so you stay fresher longer. Flatlock stitching and ergonomic seam placement help reduce chafing and allow for easy layering. Raglan sleeve construction provides a full range of motion in the arms for even greater comfort. Thumbholes at the cuffs seal in body heat for even greater warmth. Fitted design. Imported.