Negative grid structure traps heat for enhanced warmth without added bulk
Moisture-wicking and quick-drying fabric keeps you dry during activity
Four-way stretch construction allows unrestricted movement
Odor control technology maintains freshness during extended wear
Soft brushed interior manages body microclimate for comfort
Summarized by Shop
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 3.0 is built for very cold weather and moderate activity levels.