In & Out
The In & Out construction means that there is no material inside the sock that could press on the foot. It ensures direct contact between the foot and the ski boot, which is important for optimal force transfer when skiing.
Sidas Run Ultra running socks are lightweight, breathable technical socks for ultra running and long running efforts. During long efforts muscle fatigue makes the foot lengthen and widen – these socks support it like an exoskeleton and help maintain stability and comfort. They were developed with the athletes of the Sidas Matryx team and are made in Europe.
Key features
Precise forefoot compression – supports the foot during long efforts.
In & Out construction – a smooth knit that lowers the risk of hot spots.
Two Grip Yarn bands – hold the sock in place inside the shoe.
Breathable mesh – improves ventilation of the foot.
Polygiene StayFresh – regulates moisture and limits odour.
Reflective elements – better visibility when running at night.
Roomier toe area – more space for the toes on longer runs.
Who the socks are for
These unisex socks are for ultra runners and trail runners who want foot support over long distances. If you want to try a separate toe, see the Sidas T-Free Trail running socks or Sidas T-Free Run. For shorter training runs the Sidas Run Anatomic Crew running socks are a good fit, and for demanding terrain also the Sidas Trail Ultra Race. The socks have a very snug fit – if you prefer more comfort, consider going one size up. Complete your running gear with the Sidas Run 3D Protect running insoles. You will find more models from Sidas in the socks category.
Product care
Turn socks inside out before washing
Do not use fabric softener
Do not use bleach
Wash at a maximum of 30 °C
- 01Antibacterial treatment
- 02Moisture wickingSweat is moved off the skin into the outer layer, so a stop does not chill you.
- 03Anatomical fitShaped separately for the left and right foot, so it does not pinch or twist in a boot.
- 04Machine washableWashes in a machine at 30 °C, with no special care.
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