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  • Castelli Free Kit 13 Sock
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CastelliFree Kit 13 Sock
Sale 17% Off$14.98 $17.95

Item # CST00KU

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Item # CST00KU

Kit up.

The Castelli Free Kit 13 Socks epitomize clean, race-ready style with century-conquering comfort and an of-the-moment cuff height. Made from durable, quick-drying Meryl Skinlife yarns, this sock whisks moisture away from your feet as you ride and keeps offensive aromas at bay on especially hot days. Castelli adds a supportive band across the arch and uses a medium compression knit throughout the sock's body to prevent bunching or chafing as you ride.

  • Lightweight, race-ready socks with a tall cuff
  • Meryl Skinlife yarns wick moisture and resist odor
  • Airy construction to keep your feet cool on hot days
  • Midfoot support band comfortably supports your feet
  • Compression cuff keeps the sock in place
Tech SpecsSize
Tech Specs
Meryl Skinlife
Recommended Use
road cycling
Manufacturer Warranty
1 year


US MEN'S SHOE SIZE 4 - 6.5 7 - 10 10.5 - 13
EU MEN'S SHOE SIZE 36 - 39 40 - 43 44 - 47
US WOMEN'S SHOE SIZE 4 - 7 7.5 - 9.5  
EU WOMEN'S SHOE SIZE 35 - 38 39 - 41  


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Avg. ride time: 10h 45m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Anthracite version is medium grey

    Product page photo is misleading.

    Anthracite version is medium grey

    Looks nothing like photo, still nice.

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size

    Like most Castelli socks these are nice looking and comfy. Very lightweight, lightest cycling sock I've got so far. Good height on calf. They are pretty stylish, however, I'd like to point out the stock photos look ABSOLUTELY nothing like the colors on the actual product. That being said I'm still keeping them to satiate my sock fetish. Those are the Forest Green on the top and Dark Infinity Blue on the bottom. Sizing is pretty accurate but if you are a 10.5 I would still probably get XXL.

    Looks nothing like photo, still nice.