The FASTEST SOCK ON THE PLANET ™ is a custom-made sock. The sock is measured according to the size of your foot, the length and the diameter of your calf. This allows you to make a sock that fits perfectly, falls within the UCI rules and never slips. 

 Custom made for your body measurements.
 Optimised specific for the temperature of your performance.
 Optimized specific for the speed of your event.
- It's not cheap.