UA Base is a system of baselayers, numbered from 2.0 to 4.0, that takes you from cold to absolutely freezing temps. It's constructed using a special negative grid pattern with each individual cell designed 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.

• Fitted: Next-to-skin without the squeeze
• UA Base™ 2.0 Active Baselayer is lightweight, flexible & breathable for high activity performance in cool conditions
• 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
• Wide, flat waistband with a rise that sits just right on your hips
• Inside leg: 75 cm
• 71% Polyester/29% Elasterell
• Imported