The Helly Hansen LIFA® Merino Midweight Pants are a game-changer for cold-weather activities. The performance fit allows you to wear them under almost any winter pants, whether that be Nordic, uphill skinning, or downhill skiing. They keep you warm and dry, allowing you to stay outside longer. Helly Hansen integrated 100% Merino wool with our LIFA® fiber technology in an innovative two-layer design. The Men’s LIFA® Merino Midweight 2-in-1 Base Layer Pants combine the breathable warmth of Merino with the moisture-wicking properties of LIFA® fibers. These thermal leggings offer a fitted design for maximum mobility without adding bulk.