Designed for extreme cold, this sock features an anatomical design made with Polartec.
Features • Heavily insulated and designed for high altitude climbing • Left and right foot anatomical design for a precision fit that ensures better blood and nerve flow • Polartec Power Stretch provides elasticity, support, and warmth • Primaloft insulation is soft against the foot while working to trap body heat and wick moisture away from the foot • 78% Polartec Power Stretch, 11% Primaloft, 8% Nylon, 2% Thermolite, 1% Stretch Nylon with Lycra