Our LIFA® Merino Midweight ¾ Pants perform in any type of cold weather activity. We combined a 100% Merino wool layer with our proven LIFA® Stay Warm Technology in a 2-layer construction. LIFA® Merino Midweight ¾ Pants delivers all the breathable warmth of Merino wool fibers, plus the unique moisture management properties of LIFA® fibers. These base layer pants are fitted for optimal mobility without bulk. Men's LIFA® Merino Midweight 3/4 Base Layer Pants