100% TERRY CONSTRUCTION FOR ADDED WARMTH AND PADDED COMFORT HIGH THERMAL RETENTION VALUE TO HELP HOLD HEAT IN ABOVE CALF DESIGN ANKLE SUPPORT STRETCH BAND TO HELP KEEP SOCK IN POSITION, NO SLIPPING OR BUNCHING ARCH SUPPORT STRETCH BAND TO HELP KEEP SOCK IN POSITION, NO SLIPPING OR BUNCHING PATTERNED BEND AND REGULAR KNIT AT FRONT MID ANKLE TO HELP PREVENT BUNCHING ABOVE CALF HEIGHT FOR WARMTH AND COMFORT NYLON REINFORCED TOE, HEEL AND SOLE FOR ULTIMATE DURABILITY 43% MERINO WOOL, 40% ACRYLIC, 13% LYCRA, 4% POLYAMIDE *Note that the use of a technical sock is required to obtain the full functionality of GORE-TEX® boots.