Secure better foot climate regulation with the X-SOCKS® TREK SILVER WOMEN and create the perfect conditions for demanding trekking tours. In the special socks made from fine APANI® merino wool, 12 patented and protected technologies neutralize the typical stresses during trekking. The models of the X-BIONIC® 4.0 generation prove to you that outstanding quality can be further optimized through technological innovations. Sophisticated high-tech functions ensure relaxed skin. The new Air-Conditioning Channel® 4.0 promotes air exchange all the way to the foot sole. The modified Lambertz-Nicholson 4.0 Achilles tendon protection safeguards sensitive areas from pressure, friction, and impacts.