CASTELLI FAST FEET 3 SOCK

There are many aerodynamic socks on the market. But Castelli's Fast Feet sock has the development and testing to back up this claim. The few socks that have been tested were likely tested in a static test, not in motion, because it is easier. But a foot is always moving, so we created a support that replicates the movement of the lower leg. And we test on real riders to verify the results. This sock can save 2 watts at 50 km/h. The latest version features an updated cuff for greater comfort and aerodynamic gains.

CASTELLI FAST FEET 3 SOCK Key Features:

• Developed and tested for aerodynamic efficiency
• Can save 2 watts at 50 km/h
• Updated cuff for superior comfort and aerodynamic gains