Columbia Omni-Heat Lightweight Baselayer Crew

What Our Gearhead® Experts Are Saying: "I’ve worn the Omni-Heat Lightweight Baselayer Crew on countless winter hikes and ski days, and it never lets me down. The thermal-reflective lining traps heat without feeling bulky, and the wicking fabric dries quickly when I start to sweat. It’s my go-to layer when I need warmth that doesn’t weigh me down." Whether we’re booting up before dawn or stretching out a fall hike, the Columbia Omni-Heat Lightweight Baselayer Crew is the layer we count on for warmth that adapts to every adventure. The secret lies in the Omni-Heat™ thermal-reflective lining, which uses a pattern of silver dots to reflect body heat while still letting excess moisture escape. Combined with soft, stretchy fabric and ergonomic seams, this baselayer moves effortlessly with us whether we’re skinning uphill or setting a brisk pace on the trail.Omni-Wick™ technology ensures sweat evaporates quickly to keep us dry, while built-in odor control helps us stay fresh from first light to the ride home. Worn alone on cool days or layered under a shell in winter, this baselayer proves that big performance can come in a lightweight package.