• Anti-odor technology prevents the growth of odor-causing microbes, keeping your clothes fresher, longer
• Raglan sleeves and flatlock seams provide a full range of motion without chafing
• Longer length delivers full coverage
• Thumbholes provide a secure fit
• 1/4 Zip design allows for easy on/off and on-the-go ventilation
• 4.5 oz. Polyester/Elastane
• Imported

WHY WE MADE IT: UA Base™ is a total overhaul of sweat-soaked, old-school long underwear. We improved its traditional waffle pattern—and supercharged it. The result is our sweat-wicking baselayer line-up that steps up the heat as the outside temps drop. UA Base™ 1.0 is light, early season cold protection for high activity levels. Our most versatile baselayer, UA Base™ 2.0 puts a lot more cold-weather days in play. Choose UA Base™ 3.0 when it gets really cold and you need to trap every last bit of your own heat. For times when you question the sanity of even being outdoors, UA Base™ 4.0 is going to keep you warm—period. When the rest of the world’s inside, we know what drives athletes out into the cold. We’ve got your back.