Make cycling performance easy. Ultralight. The X-SOCKS® BIKE HERO UL dominates in cycling with lightness and through evolutionary improved functions. Because these high-tech functional socks belong to the X-BIONIC® 4.0 generation. They support you perfectly on tours in summer with many proven effective technologies. That's why they're patented. Special compound yarns and the patented ventilation system keep feet dry and air-conditioned. Thanks to the revised Air-Conditioning Channel® 4.0, the X-SOCKS climate regulation now works even more effectively. The shape-optimized Lambertz-Nicholson Achilles Tendon Protector 4.0 improve the protection of the sensitive Achilles tendon, the evolutionary further developed Ankle Pads 4.0 cushion the ankle more effectively and the Duckbill Shaped Footguard protects the arch of the foot from pressure. The LowCut X-Cross Bandage stabilizes the ankle and cushions it during falls.