Castelli Fast Feet 2 socks, for road races or when you cannot wear a Fast Feet TT cover, this sock saves Watt.

• The Fast Feet project of Castelli for driving in hot condition.
• The part of the foot is based on the Rosso SOCK Castelli for comfort in the shoe.
• Polyurethane socket strip at the top to keep the sock in place.
• Part of the leg built with grooved Lycra designed to help detach the air flow.
• color: Black.