Running, cycling or winter sports: With X-Socks®, youre always perfectly prepared for every athletic adventure. Whether you're a beginner or a pro athlete, our patented X-Socks® technology offers optimal support for any type of sport. Core is our beginner-level entry category into the world of functional performance socks. All Core-products offer fundamental functional features and the latest X-Bionic® technologywithout breaking the bank. If you want to enjoy a well-cushioned, optimally tempered foot throughout the day, then X-Socks® Core are for you. Based on organic cotton and Lyocell, X-Socks® Core Natural are perfectly suited for everyday use. Stay safe and protected: Light cushioning at the sole, compression zones and the Aktiv-Bund® provide maximum comfort and a secure fit, while the Lambertz-Nicholson Achilles Tendon Protector, Heel and Toe-Tip Protectors safeguard sensitive areas from injuries. Never worry about unpleasant odors or skin irritation againthe breathable Mesh st