Covert Threads Ice Military Boot Sock is built for Arctic Terrain, Our heavy weight sculpted cushion sock is specifically designed for moderate to extreme cold climates, Wool and Acrylic blend keeps feet dry and comfortable for the long haul, Silver Lining helps prevent infections, fights Foot odor and distributes thermal energy efficiently and evenly, Go Covert, Contents : 47 Wicking Acrylic 35 Wool 12 Nylon 3 Lycra Spandex 3 Silver Lining, Ventilated Mesh and Absorbent Acrylic and Wool work to keep feet dry all day, Built In Arch Support made for the long haul, Sculpted Heel and Toe Cushion engineered for absorption of high impact, Silver Lining in entire garments helps prevent infections and fights Foot Fungus; Silver also aids in storage and distribution of thermal energy evenly and efficiently, Absorbent Acrylic and Wool work to keep feet dry all day, Size: 4 8, Color: Black, SKU: TCLGR1027