ColdPruf Men's Extreme Performance Dual Layer Bottom 96% CPT Performance Polyester / 4% Spandex Imported Two-layer engineering traps body heat between layers, resulting in chill-blocking warmth 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 Featuring ColdPruf Technical Fiber formulated with Silvadur Intelligent Freshness to minimize odor and odor causing bacteria on fabric Best used as base layer in very cold to extreme cold weather and medium to high activity levels