ColdPruf Men's Premium Performance Single Layer Bottom Single layer engineering with trim athletic fit and extra length in body formoves-with-you-comfort Crafted using the highest quality materials including ColdPruf Technical Fiber with Silvadur technology, providing freshness protection to minimize odor and odor causing bacteria on fabric Pant sits at natural waistline. Front and back rise provides an exceptionally comfortable fit and maintains coverage during various activities Tagless labeling, non-itch waistband, gussets for added durability and comfortable fit and convenient functioning fly front Moisture management wicks perspiration and dries quickly Best used as base layer in cold to very cold conditions and medium to high activity levels