Under Armour Base 3.0 1/4 Zip
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Here's what other sites are saying:
If your spit freezes before hitting the ground, make sure you suit up in the Under Armour Men's Base 3. 0 1/4-Zip Top before jumping on the lift. This top is among the warmest baselayers in the Under Armour line-up. Four-way-stretch polyester provides freedom of movement, flatlock seams ensure chafe-free comfort, and the 1/4-zip front provides on-demand ventilation when you hike for some fresh tracks.
- Backcountry.com refers to the men's version
Now built to keep you warmer and drier than ever in extreme cold, Under Armour's Base 3.0 traps heat with cozy grid fabric against the skin, while the smooth outer surface lets you layer with ease. 1/4 zip provides on-demand ventilation.
- EMS refers to the men's version
UA took the thermal and rebuilt it to work for athletes that take their game off-road. The unique negative grid traps monster warmth without adding excess weight and the smooth exterior allows easy layering. UA Base(TM) 3.0 is heavyweight protection in a lightweight layer. It provides superior warmth for times when you know you'll need it. On the hill or on the move, when you run cold get the 1/4 zip that keep you going strong. It features flatlock stitching, ergonomic seam placement and raglan construction. This 1/4 zip offers on demand venting and the material is Armourblock anti-odor technology.
- Rocky Mountain Trail refers to the men's version