Midweight thermal top

A lightweight, mid‑weight merino wool base layer designed for women, featuring a breathable ½‑zip front and long sleeves in navy. It offers natural temperature regulation, moisture control, and a comfortable fit for outdoor activities.

Women's long sleeve merino wool base layer with 1/2 zip, midweight for warmth and comfort.

A lightweight, breathable merino wool half‑zip base layer in navy, designed for women. It offers midweight warmth, moisture management, and a comfortable fit with a subtle stripe detail for active or everyday wear.

Columbia Men’s Omni-Heat™ Midweight Baselayer Crew. Warm and breathable, this black long sleeve shirt is made for men in size XL.

Stay warm and comfortable with the Columbia Men’s Omni-Heat™ Midweight Baselayer Crew. This long-sleeve thermal top uses reflective technology to trap heat while providing stretch for a full range of motion.

Columbia Men's Omni-Heat™ Midweight Baselayer Crew in black, size small. A men's thermal top with a stretchy fabric for added comfort and movement. Featuring the Columbia Omni-Heat technology that retains warmth while allowing excess heat to escape.

The Columbia Omni-Heat Midweight Baselayer Crew is a black long sleeve thermal top designed for women, offering exceptional insulation and comfort with its stretch fabric construction.

Comfortable and breathable Columbia women’s mid‑weight stretch long‑sleeve base layer. Features heat‑retaining Omni‑Heat insulation, moisture‑wicking fabric, and a relaxed fit for active or everyday wear.