Hot Chillys Women's Low Volume OTC Socks 44% Polyester 27% Nylon 18% Micro Tencel 9% Alpaca 2% Lycra Made in the USA and Imported Knitted with compression for increased circulation MTF Moisture Transfer Fabric side panels wicks moisture away from the foot Bio Silver antimicrobial treatment Anatomically designed to the foot Low Volume Sock Knitted with compression for increased circulation