The Baselayer Simplified: Omni-Heat

The feedback we’ve had on Columbia‘s Heavyweight Baselayers? They’re warm enough that you can dispense with the usual fleece midlayer, particularly for a high-output activity like XC skiing or snowshoeing. XC skiing on a cold January day, we paired the Heavyweight Baselayer with a medium-insulated jacket. For alpine skiing, the Heavyweight served well under a puffy down jacket. Everyone layers differently, but Columbia’s Omni-Heat reflective technology is a one-stop shop for dryness, warmth, and next-to-skin comfort.

Heavyweight Half-Zip Top (Men’s or Women’s)


Built for warmth and movement in the deep cold, this toasty baselayer features a performance blend of stretchy, body heat retaining thermal reflective waffle fabric with Omni-Wick® stretch jersey inserts at the side/underarm to disperse excess heat and wick sweat during dynamic activity. Raglan sleeves deliver better range of motion, and a dropped hem in back provides more coverage where it counts.

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  • Omni-Heat Thermal Reflective breathable material on the core, shoulders, and arms regulates your temperature with silver dots that reflect and retain body heat
  • 4-way comfort stretch for superior mobility
  • Antimicrobial
  • Thumb holes for coverage and security.

Midweight Longsleeve Top (Men’s or Women’s)

men's midweight

With thermal reflectivity for lightweight warmth and sweat-wicking inserts, the midweight top is the ideal all-day baselayer for aerobic activity. Finely tuned ergonomic seaming cuts a sleek, comfortable-wearing silhouette. Ideal for high-output activity in cool weather.

Available online or at Columbia stores.