Let’s be clear: these aren’t your grandpa's long underwear. The UA Base™ 2.0 thermal crew is warmer, lighter, and drier. That’s elite performance you can take off-road It’s the unique negative grid that traps monster warmth and wicks away sweat. UA’s exclusive Scent Control also keeps you undetected with advanced odor-destroying technology. It puts traditional carbon scent blockers to shame by lasting 10x longer, being lighter, and keeping you more mobile. Be more than a hunter…be a predator.