Castelli claims the best sock they've ever made for performance cycling is the Rosso Corsa Pro 15 Sock. And, they might be right. It's constructed from multiple-structure knit with extra stretch and a compressive midfoot support band. An asymmetrical construction mirrors the shape of the foot,...

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Castelli's Rosso Corsa Pro 9 Sock features an ultralight blend of Meryl Skinlife yarns that wicks moisture fastidiously throughout your ride, warding off chafing and blisters whether you're on-course or pedaling just to enjoy the views. Cushioning and compression keep our blood moving and our...

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