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  • Castelli Difesa Thermal Cap
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CastelliDifesa Thermal Cap

Item # CST00O4

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  • Black/Red, One Size ($39.95)
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Item # CST00O4

Difesa Thermal Cap

  • A winter cycling cap for cool to cold conditions
  • Rib-knit wool around the ears keep you warm
  • Thin enough to fit under a helmet
  • Thermoflex Core2 fabric offers optimal wicking over the Windstopper version
Tech Specs
Tech Specs
[face fabric] Thermoflex Core2, [ear covers] wool blend
Recommended Use
road cycling
Manufacturer Warranty
1 year

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Cool in the Cool

  • Familiarity: I've used it once or twice and have initial impressions

I recently purchased the Castelli Difesa Thermal Cap and took it out on 40-48 degree road ride. The hat did a great job regulating temperature by keeping my head warm but also breathing well. The cap fits great under my helmet and the style matches exactly what I was looking for. The visor is the perfect length and does not interfere with visibility. I give this 4 stars because I really have to pull the ear flaps down to completely cover my ear. I do have a size large head and was worried about the ear coverage when buying this. I am interested to see how this fares in weather below 40 degrees. If you are looking for a hat that gives you a euro feel also protects against the elements, this hat is for you.