Overcome every obstacle with the X-SOCKS® RUN DISCOVERY 4.0 and enjoy the lightness of running. To run more calmly on every track, sprint faster, and arrive more relaxed, the patented high-tech features of Generation 4.0 create ideal performance conditions. The perfectly tailored fit ensures comfort effects under all conditions. The anatomically shaped footbed guarantees ergonomically improved cushioning. With every step, the perfected Air-Conditioning Channel® 4.0 supports ventilation by pumping fresh air towards the sole of the foot. The comprehensively redesigned Lambertz-Nicholson Achilles tendon protector® 4.0 now better protects your foot from friction, pressure, and impact, thanks to its reinforced cushioning zones. Additionally, the XSuppronation® XX-Cross® bandage significantly enhances stability. And Albedo® 360-degree reflective yarn on the outer collar increases safety in the dark.