Seeking the perfect ultralight base layer for winter travel? The Give-N-Go® Performance Base Layer Bottom has an interior, fold-over credit card pocket at the waistband for stashing small items. Breathable mesh fabric supplies airflow to keep you cool and wicks moisture away from the skin. Second layers glide over the smooth surface. SILVADUR™ technology delivers silver ions to the fabric surface and activates them in the presence of undesirable bacteria, helping eliminate odor and keeping you fresh for the life of the garment. This quick-drying layer can be washed in the sink and dried overnight, so you only need to pack one for your entire trip.