Introducing the Sidas Run Ultra Sock, an inaugural technical, lightweight, and breathable running sock meticulously engineered to bolster the foot's evolution during prolonged distances, like the marathon. Crafted with the profound expertise in foot dynamics and insights gleaned from athletes and the Sidas-Matryx Team, these socks epitomize innovation in running gear. The sock functions as an exoskeleton enveloping your foot, offering stability, support, and alleviating muscle fatigue. The Run Ultra socks feature dual grip strips to ensure they stay securely in place within your shoes. Additionally, the wider toe box promotes enhanced freedom of movement for your toes, preventing any discomfort from rubbing against each other. Furthermore, the socks include strapping on the metatarsal heads and heel areas for added support and stability. In & Out construction (wireless) Reflective thread Breathable mesh Polygiene technology for odour and moisture management 2 grip strips Metatarsal hea