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Trail Ultra socks are technical, lightweight and breathable ultra trail running socks. They are built to support the development of your feet over long distances.

Thanks to the Ultra Fit technology and the help of Team Sidas Matryx, the Trail Ultra socks act like an exoskeleton to compensate for the consequences of muscular fatigue of the foot during an ultra/ trail run.

The Trail Ultra sock includes all the features of the perfect ultra trail sock: strappings in the heel and metas to prevent injury and fatigue, combined with 

  • optimal breathability of the foot to avoid the accumulation of sweat and a 
  • wide toe box to support the lengthening of your foot during the race.
  • Two non-slip grip strips have been integrated into the sock to improve sock/sole synergy
  • integrated ankle guard
  • In&Out construction for better sole contact and feel
  • reflective strip in the sock for increased visibility when running at night.
  • optimal moisture and odour management thanks to Polygiene technology. This treatment, which uses naturally occurring silver salt microparticles, prevents bacteria from spreading and growing, reducing odours from strenuous activity.


  1. In & Out construction (wireless)
  2. Reflective tape
  3. Ankle protection
  4. Polygiene technology for odour and moisture management
  5. 2 anti-slip grip strips
  6. Metatarsal and heel strapping
  7. Large toe box


  • 60% polyamide
  • 24% polyamide multifilament
  • 9% Elastane
  • 6% Silicone
  • 1% Reflective yarn

Design in France / Made in Europe


  • Turn the sock inside out before washing
  • Do not use fabric softener
  • Do not use bleach
  • Wash at 30°C maximum

Entretien chaussettes running Sidas


Synergyfit technologie SynergyFit™
Polygiene  Odor control Polygiene