Whether traveling across continents or across town, you want a base layer that delivers long-lasting comfort and stands up to the rigors of your day. The new Sol Cool™ Cooling Underwear intelligently combines the comfort of smooth, mercerized cotton with jade-infused, wicking nylon fibers to adapt to your body temperature. The result is a cool, soft, and dry base layer that unites luxury and performance to keep you in your ideal comfort zone.