2-pair set - Run Ultra blue/pink Bundle Ski boots exert significant pressure

Ski boots exert significant pressure on the shin

4 plastic reinforcements for better protection and rigidity

Lightweight and stretchy for optimal comfort during exercise

Your feet will be protected from the cold by the aluminium protective film

Thanks to their meticulous design

2-pair set - Run Ultra blue/pink Bundle Ski boots exert significant pressure"Relying on champions to co create tomorrow's foot comfort solutions that are even more efficient and innovative." That's the challenge of offering you the best in running socks! That's why the Run Ultra running sock was developed with both our expertise in the foot domain, and the field feedback from our athletes and the Sidas Matryx Team. The sock acts like an exoskeleton around your foot to stabilise it, provide support and compensate for muscle