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, re-engineered for athletes performing at their peak. UA Base 2.0 is built for cold weather and higher activity levels.

FEATURES

• Fitted: Next-to-skin without the squeeze. 
• UA Base 2.0 is highly versatile mid-weight protection for colder conditions & a variety of activity levels 
• Soft, brushed negative grid interior traps hot air, providing superior warmth 
• 4-way stretch construction moves better in every direction 
• Material wicks sweat & dries really fast 
• Anti-odor technology prevents the growth of odor-causing microbes 
• 95% Polyester/5% Elastane