Under Armour 2.0 Base Crew - Women's: A re-invention of our most versatile thermal baselayer yet, the updated UA Base 2.0 Crew is a must-have for any athlete who refuses to let winter weather hold her back. Mid-weight ColdGear thermal grid fabric traps heat in tiny pockets to keep you warmer, longer. It also wicks sweat, so it dries quicker too. So the next time the temperature drops, pick up this essential baselayer and get out there. THE FUNDAMENTALS FITTED: Sits close to the skin for a streamlined fit without the squeeze of compression. UA Base 2.0: Versatile mid-weight layering for cold conditions Thermal grid fabric traps heat in tiny pockets for long-lasting protection Quick-dry construction wicks moisture to keep you drier, lighter, and more comfortable Lightweight, 4-Way Stretch construction improves mobility and maintains shape Anti-microbial technology fights odors to keep your gear fresher, longer Raglan sleeves and Flatlock Seams unlock mobility and eliminate chafing Thumbholes keep sleeves secure and help seal in your body heat 4.9 oz. Polyester/Elastane