What Our Gearhead(R) Experts Are Saying: "I've worn the Omni-Heat Infinity Knit Crew on subzero ski days, and it's amazing how much warmth it adds without bulk. The gold dot liner really traps heat, and it still breathes well when I'm working hard. It's my go-to baselayer when I need maximum thermal performance."When temps plummet and the forecast calls for icy dawn patrols, the Columbia Omni-Heat Infinity Knit Long-Sleeve Crew keeps us comfortably warm without slowing us down. Inspired by NASA space blankets and tested on the Moon itself, the Omni-Heat(TM) Infinity lining uses an advanced pattern of thermal-reflective gold dots to capture and retain more body heat than ever. Soft, stretchy fabric with Omni-Wick(TM) technology quickly pulls moisture away to keep us dry, while odor-neutralizing treatments ensure we stay fresh from first chair to apres. Whether layered under a shell for ski days or worn solo in brisk conditions, this baselayer offers unmatched warmth, breathability, and mobility-so we can focus on chasing fresh lines instead of fighting the cold.