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Castelli Rosso Corsa Pro 9 Sock White
Castelli Rosso Corsa Pro 9 Sock Black
Castelli Rosso Corsa Pro 9 Sock Savile Blue
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Castelli Rosso Corsa Pro 9 Sock White
Castelli Rosso Corsa Pro 9 Sock Black
Castelli Rosso Corsa Pro 9 Sock Savile Blue

Rosso Corsa Pro 9 Sock

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Rosso Corsa Is Back And Better Than Ever

From the top of your head to the tips of your toes, every apparel choice you make plays a part in your performance. Treat your feet to world-class quality with the Castelli Rosso Corsa Pro 9 — the best sock ever made for pro cycling. Thanks to an incredible composition and all the details you need for success, these socks are perfect for long days in the saddle.

Constructed with Meryl® Skinlife yarn, these socks feature unique antimicrobial silver ions that reduce the prominence of odor-causing bacteria. The 200-needle design allows for extra stretch, which fits your foot and won't fall mid-ride. A multiple-structure knit gets the right performance in every part of the sock, including a compressive midfoot support band that enhances circulation. With a cushioning pad under the ball of the foot, these socks deliver world-class power with comfort that lasts all day long.

Light up the night with the ultra-visible reflective tab at the center back. The Castelli Rosso Corsa Pro 9 Sock provides cooling mesh, a padded forefoot, and even a compression midfoot to make your rides better than ever before. With an asymmetrical construction so you can tell your socks apart, indulge in exactly what you need to get happy feet all day long.


  • Multiple-structure knit to get the right performance in every part of the sock
  • 200-needle construction for extra stretch
  • Compressive midfoot support band
  • Asymmetrical construction to mirror shape of foot
  • Reflective tab at center back
  • Cushioning pad under ball of foot
  • Meryl® Skinlife yarns with antimicrobial silver ions to reduce odor

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    Shoe Size35-3940-4344-47   

    Fabric Type: Synthetic 


    Cuff Height: Ankle 

    White - S/M

    Mfg PartNum: R4521027001-2 

    White - L/XL

    Mfg PartNum: R4521027001-4 

    White - 2X-Large

    Mfg PartNum: R4521027001-6 

    Black - S/M

    Mfg PartNum: R4521027010-2 

    Black - L/XL

    Mfg PartNum: R4521027010-4 

    Black - 2X-Large

    Mfg PartNum: R4521027010-6 

    Savile Blue - S/M

    Mfg PartNum: R4521027414-2 

    Savile Blue - L/XL

    Mfg PartNum: R4521027414-4 

    Savile Blue - 2X-Large

    Mfg PartNum: R4521027414-6 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Really like these socks for comfort and temperature control.
    by Gary Walters
    Cycling Enthusiast
    0 of 1 customers found this review helpful.

    These socks perform great in most Florida Weather.They are stylist and match my kit perfectly.

    Reviewed 6/24/2021
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