For road racing or when you can't wear a Fast Feet TT Shoecover, this sock saves watts

Features

• Castelli's Fast Feet project — for riding in warm conditions
• The foot portion is based on the Castelli Rosso Corsa Sock for in-shoe comfort
• Polyurethane grip strip at top to keep sock in place
• Leg portion constructed with engineered grooved Lycra® to help detach airflow
• This sock can save 2 watts at 50 km/h

Specifications

• Gender- Men
• Socks Length- Calf Length
• Weight:49 g
• Temperature:10°C - 30°C / 50°F - 86°F
• Fit: Aero