Castelli Fast Feet 4 Sock
36 - 39Currently out of stock
Free shipping starting at 50.–
Shoe size2
At a Glance
Aerodynamic leg design
Grooved fabric on the leg diverts airflow, saving 2W at 50 km/h.
Secure grip at the cuff
A polyurethane anti-slip insert at the top edge ensures a secure fit without sliding on the leg.
Functional and breathable foot section
The foot section is based on the Castelli Rosso Corsa sock and offers breathable as well as quick-drying properties.