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Rosso Corsa Pro 15 Sock

2.1666666666666665 out of 5 stars
6 Reviews
$14.99 - $19.99
Up to 25% off
Color:Belgian Blue


Size Chart


Why We Like The Rosso Corsa Pro 15 Sock

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, and Meryl Skinlife yarns with anti-odor silver ions reduce odor. A cushioning pad under the ball of the foot adds comfort, and there's even a reflective tab at the back.


  • Castelli's best performance cycling sock for discerning cyclists
  • Rep the brand's logo with a minimalist design
  • Anti-odor silver ions reduce odor to stay fresh
  • Asymmetrical construction mirrors the shape of the foot
  • 200-needle construction increases stretch
  • Item #CSTZ7HE
Meryl Skinlife
Manufacturer Warranty
1 year

Overall Rating

2 based on 6 ratings

Review Summary

1 Stars - 3 reviews
2 Stars - 1 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 1 reviews

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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1 out of 5 stars

September 20, 2023

Total Waste of Money

I've used it several times
Size Bought:

I buy from this site all the time - love Competitive Cyclist. I also have a ton of Castelli product. However, these socks are a disgrace to the brand. Got XXL for my size 11.5 feet (size 44 euro). After 2 washes and air drying they shrunk to the point where they don't really fit anymore. Too small. Can't stop it from shrinking. Right/Left specific socks - what a joke. This product should be pulled from the web site.

Adam G
2 out of 5 stars

March 18, 2023

Small even by Castelli standards

I've used it once or twice and have initial impressions
Size Bought:

I have a lot of Castelli kit and I understand that it runs small, at least for Americans. These socks take it to another level. XXL is the largest they make and they're slightly too small for my size 13 feet. It's a bit of a struggle to pull them on but they fit acceptably once on. The toe seam is a bigger problem for me. I just can't get it to a comfortable place and that could be because the socks are so tight I can't adjust them. I'll keep the 2 pairs I bought but can't say I'd buy Castelli socks again.

David A
1 out of 5 stars

January 6, 2023

Castelli socks

I've used it several times
Size Bought:
5' 9"

Extremely disappointed. After several uses socks failed (holes). Don’t recommend it.

Alexander S
3 out of 5 stars

May 11, 2022

SUPER small

Size Bought:
6' 2"

I'm size 11.5/12 in shoes bought these in xxl being safe. Couldn't get them on my feet. Gave them to my 12 year old and still hard to get on but once on very nice quality socks.

1 out of 5 stars

February 13, 2022

Poor quality

used the socks about half a dozen times and. once sock tore with a big hole and the other has a tear down the side already

Tarleton S
5 out of 5 stars

April 24, 2021

just right for small feet

I've used it once or twice and have initial impressions
Size Bought:
5' 8"

I wear like 40.5 to 41 shoe and finding a sock with a higher cuff length that also fits my foot can be tough. These are perfect! They are left/right specific with some subtle padding in the toe and foot pad area. That 15 cuff comes up right under to slight over the bottom of my calf with a snug fit.

Charles C