Think beyond standard cold-weather gear with the Arc'teryx LEAF Men's Cold WX AR Long Sleeve Shirt. This base layer is built for cold conditions and is capable of wicking moisture away from your skin to keep you warm and dry. This shirt is amplified with Nylon Core Spun Technology and offers robust strength and resilience. What's more, its natural merino wool counters odor, keeping you feeling fresh even amid intensifying activities.