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Castelli Fast Feet 4 2026 Cycling Socks
Performance competition cycling socks
Notre avis
Castelli Fast Feet 4 socks are designed for performance while maintaining a comfortable fit to make your rides last longer.
Textile expert and former professional runner
The Castelli Fast Feet 4 socks are the result of the Fast Feet project, developed to gain every possible watt through aerodynamics. Used in races by riders from the WorldTour Soudal–Quick-Step team, including Paul Magnier, they are designed for competition and high-intensity efforts.
The foot section is based on the Rosso Corsa Socks for optimal comfort inside the shoe, whilst the grooved Lycra upper channels air to reduce drag. A polyurethane band at the top of the sock ensures a perfect fit, even at full speed.
Technical specifications:
- Castelli Fast Feet 4 cycling socks
- Colours: Black, Blue, White and Pink
- Size: S/M (36-39) - L/XL (40-43) and XXL (44-47)
- Rosso Corsa fabric on the foot for maximum comfort
- Ribbed Lycra fabric on the upper section to improve aerodynamics
- Brand: Castelli
Castelli size guide
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