The Sidas Trail Ultra Running Socks in the Black/Yellow colour are technical, lightweight and breathable socks designed for ultra-trail and long-distance running. Their Ultra Fit construction supports the foot as fatigue increases over long distances, while targeted support, grip and ventilation help maintain comfort and stability throughout the run.

• Ultra Fit Technology: designed to support the foot and help compensate for the effects of muscular fatigue during long-distance trail running.
• Metatarsal and Heel Support: targeted strapping around the metatarsal and heel areas provides additional support during prolonged effort.
• Wide Toe Box: provides extra room for the toes and accommodates changes in the foot over long distances.
• Two Anti-Slip Grip Strips: improve contact between the sock and insole and help reduce unwanted movement inside the shoe.
• Ankle Protection: integrated protection helps shield the ankle during trail running.
• In & Out Construction: improves direct contact and feel between the foot, sock and insole.
• Polygiene Technology: helps manage moisture and limit the development of odours.
• Reflective Detail: improves visibility when running in low-light conditions.
• Medium Height: provides additional coverage around the ankle.
• Composition: 60% polyamide, 24% multifilament polyamide, 9% elastane, 6% silicone and 1% reflective yarn.
• Made in Europe: designed in France and manufactured in Europe.