EXTRA WARM COMPRESSION SOCKS: Thanks to the gradual compression (23–32 mmHg), these compression ski socks improve blood circulation. Keep your feet warm and your legs fresh and strong to prevent sore muscles after long days of skiing. ALL DAY COMFORT: the long thermal socks are specially designed for full days on the slopes. They have an ergonomic left and right fit that prevents pressure points and blisters, so you can fully concentrate on your runs. PREMIUM QUALITY MERINO WOOL: Warmth, moisture management, and odor resistance ensure your feet stay dry and comfortable, no matter how long you're on the slopes. MAXIMUM COMFORT: The extra-padded footbed of the winter socks absorbs shocks and reduces pressure, for a relaxed and pain-free skiing experience. Seamless circular knitting technology ensures long-lasting quality and consistent comfort. CHOOSE THE RIGHT SIZE: The size of the STOX Energy Socks depends on your calf circumference and shoe size. Measure the circumference of your calf at its widest point while standing. If you're between sizes, always choose the larger size for optimal comfort.