Trail running socks - Trail Ultra black Size Socks:37-38 They are also suitable for

They are also suitable for everyday use

Rounded edges for greater comfort

Heating elements: gentle and constant heat to keep your feet warm

You can use it as you see fit: before

Microfibre overlay: Soft-touch feel

Trail running socks - Trail Ultra black Size Socks:37-38 They are also suitable forMuscle fatigue causes the foot to collapse and lengthen, and the metas to widen. We have taken these phenomena into account when designing this new range of socks with the athletes of Team Sidas Matryx. Thanks to the Ultra Fit technology, the Trail Ultra socks act like an exoskeleton to compensate for the consequences of muscular fatigue of the foot during an ultra trail. The Trail Ultra sock includes all the features of the perfect ultra trail sock: