UA Base 3.0 is built for very cold weather and moderate activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think
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UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold. UA Scent Control Technology to keep you undetected in all pursuits. Soft, brushed grid interior traps air against your skin, closely managing your body's microclimate to keep you warm & comfortable. Material wicks sweat & dries really fast. 4-way stretch construction moves better in every direction.
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The Women's Under Armour ColdGear 3.0 Baselayer Crew Shirt provides versatile warmth and mobility to keep you warm on cold winter days. The Under Armour ColdGear 3.0 women's baselayer is designed with a soft, brushed grid interior that traps air against your skin to keep you warmer for longer. Made from four-way stretch fabric, the Under Armour ColdGear 3.0 women's baselayer allows you to move in every direction with ease and comfort.
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UA Base is a system of baselayers numbered from 2.0 - 4.0 that takes you from cold to absolutely freezing temps. It uses a special negative grid structure to trap heat without adding bulk. Think long underwear reengineered for athletes performing at their peak. UA Base 4.0 is built for extreme cold weather and lower activity levels.
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