The X-SOCKS® TREK SILVER guarantees a performance-enhancing barefoot climate® and creates ideal conditions to conquer even the most demanding trekking tours. Twelve legally protected technologies in this special sock made from fine APANI® Merino wool counteract the typical stresses encountered during trekking. The models from the X-BIONIC 4.0 generation prove that outstanding quality can be further optimized through technological innovation. Refined high-tech functions ensure a relaxed skin sensation, lasting comfort, enhanced safety, and increased endurance. The newly shaped Air-Conditioning Channel® 4.0 promotes air exchange along the sole of the foot. The modified Lambertz-Nicholson Achilles tendon protector 4.0 protects sensitive areas from pressure, friction, and shocks. Skin NODOR® in the densely knitted material neutralizes germs and odors.