Mid-height, breathable soft shell upper. Speed-lace front fastening system. EVA midsole for light-weight insulation and cushioning. Polar Rubber™ outsole for maximized grip and longevity of boot at cold temperatures. Fixed-Fit multi-layer inner boot system featuring Thermawick™ soft, next-to-foot wicking layer for warmth. Tundra Rated For Frozen and Snow-Covered Terrain.