Helly Hansen LIFA Merino Midweight Pants - Size XL - NWT From manufacturer website: Our LIFA® Merino Midweight Pants perform in any type of cold weather activity so you can get outside and stay outside. We combined a 100% Merino wool layer with our proven LIFA® Stay Warm Technology in a 2-layer construction. LIFA® Merino MIDWEIGHT 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. All items from pet friendly smoke free home.