Longjohns

A minimalist piece designed for cold weather, active insulation. It adds warmth but is highly breathable and focused on wicking moisture and regulating body temperature when exercising. OMM says Superlight full base or midlayer using Primaloft ACTIV…

For a lightweight, performance focused baselayer pant, these are a great option. Zoned merino provides high performance warmth while strategically placed synthetic fabric aids temperature and moisture control.  Icebreaker says Ultralight base l…

  The benefits of Merino Wool are that it naturally regulates temperature and has its own odour control mechanism. Its also great worn next to the skin, the 175 Everyday range from Icebreaker delivers these benefits in a straightforward baselaye…

Patagonia's Capilene Theramal Weight Bottoms are warm, breathable polyester baselayers with minimal bulk. Polartec Power Grid fabric with Polygiene permanent odor control. Fair Trade Certified sewn. Patagonia says Soft, stretchy, breathable and...

The Lifa Merino Lightweight Pant is a lighter version of the original merino pant. It still works really well combining Merino and Helly Hansen's LIFA technology to produce a warm and breathable base layer. Helly Hansen says A unique, lightweight,..…