These ultra soft thermal pants provide comfortable warmth that won’t weigh you down. Ultra-fine brushed fibers and closely knitted seams help block the loss of body heat. Worn on its own or as a base layer, these thermal pants adds warmth without over-heating. Brushed fabric adds warmth without weight. Moisture wicking helps keep you dry and comfortable. Convenient fly for when nature calls. Base layer naturally stretches with your body for freedom of movement.