Find Your Store
Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards

Alpha Flight RoS Jacket - Men's

5 out of 5 stars
1 Review
Current price: $223.99 - $239.99 Original price: $319.99
Up to 30% off
Color:Belgian Blue/Pompeian Red/Rock Blue


Size Chart


Why We Like The Castelli Alpha Flight RoS Jacket

We like the Castelli Alpha Flight RoS Jacket for those late fall rides where we need a bit of extra help staying warm in mild conditions. The chest, sleeves, and upper back feature the Nano Flex Light woven fabric to block wind without sacrificing breathability, while the Nano Flex Extra Dry fabric on the back offers ventilation and moisture-management. This jacket also features plenty of pocket space with three rear drop-in pockets and a zippered side for easy access.


  • Lightweight jersey jacket for mild riding conditions
  • Built with Nano Flex Light woven fabric for protection and breathability
  • Alpha double-layer construction provides warm insulation
  • Nano Flex Extra Dry on the back offers superior ventilation
  • Zippered side pocket keeps small valuables secure while riding
  • Three rear pockets store snacks, tools, and other essentials
  • Item #CSTZ7R4
[chest, sleeves, upper back] Nano Flex Light woven fabric, [back] Nano Flex Extra Dry, [insulation on chest, sleeves, and back] Polartec Alpha
fall, winter
Center Back Length
[medium] 25.5in
[back] Nano Flex Extra Dry
3 open rear, 1 zippered side
Claimed Weight
[medium] 9.77oz (277g)
road cycling
Manufacturer Warranty
limited 2 years

Overall Rating

5 based on 1 ratings

Review Summary

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

Fits True To Size

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?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

March 8, 2024

Great colder weather jacket

I've used it several times

Excellent insulation and wind-blocking material. Its streamline fit feels light and very non-restrictive. With bayer layer and long sleeve shirt, I was comfortable in mid to upper 40's. I'm 5-9" and 140 lbs. with athletic build and XL firs nicely.

Charles W

Originally reviewed on