DescriptionUA 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
Men's UA Tactical ColdGear® Infrared Base Crew
Men's UA Base 4.0 Crew
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Under Armour® Men's ColdGear® Base 3.0 Series Packaged Long-Sleeve Crew Shirt
Mens Base Layers Active Under Armour
Under Armour® Men's ColdGear® Base 3.0 Series Packaged Long-Sleeve Crew Shirt
Under Armour ColdGear Base Series Crew 3.0 for Men
Under Armour Mens ColdGear Fitted Mock Blouse Base Layer (S, Black) at Men's Clothing store
Men's UA Tactical ColdGear® Infrared Base Crew
Under Armour ColdGear Base 4.0 Crew
Under Armour Base 3.0 All Season Baselayer Men's Coldgear Crew Shirt (Size M)