Running, cycling or winter sports: With X-Socks®, you’re always perfectly prepared for your athletic adventures.

Whether you're a beginner or a pro athlete, our three distinct X-Socks® technology categories offer optimal support for any level and for any type of sport.

DISCOVER - PERFORM - EXPERT

Our Expert category is made for elite athletes who demand nothing but the best. If you're an ambitious athlete looking for unparalleled performance and maximum protection, then our Expert category is for you.

All Expert-products are engineered with the most advanced technologies and materials available, providing you with the ultimate support for your sport. You'll feel the difference in every step.

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Our X-SOCKS® MOUNTAIN EXPERT MERINO OTC are the number one choice for elite mountaineers who demand the best in performance and protection. Crafted with the finest Merino wool, these socks offer unparalleled benefits that ensure you conquer the highest mountains with ease.

Stay cool & ventilated: Merino wool is not only comfortable, but also provides excellent odor resistance and moisture management, which is reinforced through the integrated Mesh construction, Air-Conditioning Channel®, Airflow Ankle Pad and Airflow Channel at the sole, which keep your feet dry and fresh, even during the most strenuous ascents.

Stay protected: The Shin, Instep, Toe, Toe-Tip, Heel and Calf Protectors guard your feet against blisters and injuries while the innovative Lambertz-Nicholson Achilles Tendon Protector ensures unparalleled protection for your tendons.

Stay comfortable: Functional cushioning zones reduce impact and fatigue, allowing you to hike longer and harder. Suppronation® Bandages and the Aktiv-Bund® ensure a secure and comfortable fit that stays in place, no matter how rugged the terrain.

Choose X-SOCKS® MOUNTAIN EXPERT MERINO OTC for your next mountaineering challenge and experience the most advanced performance-enhancing technologies at your feet.

EXPERT Socks