ColdPruf Women's Pro-Tek Single Layer Bottom 100% Recycled Repreve Polyester. Imported Tagless with Flat Seams and Extended Tail for Comfort True Sizing for Accurate Fit Ring Spun Yarns Provides Exceptional Softness Moisture Management and Antimicrobial Protection of Fabric by Microban Thermachoice System: Cold to Very Cold Weather / Medium to High Activity