Crafted for casual comfort, come snow or shine, the Le Bent Zero Cushion Bootfit Snow Socks use temperature-regulating Merino wool that stays breathable under all conditions with soft-to-the-touch rayon from bamboo that keeps you fresh with anti-odor fabric. The Definitive Fit System™ encourages a supportive and precise fit with mesh ventilation that provides breathable comfort and Foot Molding Memory Stretch™ that shapes to your foot.