Innovative Technology specifically engineered and designed to perform on wet ice. Engineered for low-temperature use. Offers Vibram performance, quality and durability. Improved grip on cold, icy or snowy surfaces compared to existing Vibram soles. A thermochromatic lug on each sole
which turns white to blue as the temperature near 0 degrees Celsius (serves as an indicator to let the wearer know the temp. is low enough for ice formulation).