The Slipstream is designed to wear over your cycling shoes in both cool weather and anytime you want an aerodynamic advantage. Made with DuPont Cordura Nylon for strength, durability, and abrasion resistance and Lycra for a snug, aerodynamic fit. Lightweight knit construction provides a comfortable, low bulk fit for all riding conditions.
Good Cover..Not for winter but great for fall.
Much like the discontinued Defeet thermeator sock, the slipstream blocks wind and cool air down to 40F. If treated well it will last a couple of seasons.