Jordi Diego & Seb can confirm 100 miles is a long long way. & they can also confirm its even longer if your feet are in bits. Originally designed for the brutal demands of the UTMB you will be forgiven for wearing these protective socks during other ultras across the globe. Based on the Pro Racing Socks Trail this long distance trail sock provides a reinforced Achilles strap for increased & incredibly stable support. Multiplied 3D. Dots absorb a maximum of shocks & vibration from the constantly varying terrain as well as cleverly prevent bruising on the inside leg & malleolus caused by flying feet. The toe box is particularly reinforced & padded to protect toes & nails on relentless technical descents. On the mid & forefoot sections the dots combined with a 360° arch support prevent the material from twisting thus reducing the risk of blisters & offering increased stability. Targeted compression boosts blood flow to delay fatigue & allow you to keep running through the night. Take your cues from our pros & conquer the toughest roughest terrain in the unrockable blue Ultra Trail Socks. KEY BENEFITS Maximum comfort provided by additional padding & a reinforced toe box specifically designed for the demands of ultra-distance races. Increased stability & proprioception for a reassuring supportive feel & hightened foot awareness encouraging you to be extra-consciousness of foot placement in rough & rocky terrain. Specific muscle support & injury prevention thanks to targeted compression & reduced vibration in the ankle & lower calf.