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Castelli Alpha RoS 2 Limited Edition Jacket - Men's

5 out of 5 stars
3 Reviews

Out of Stock

Don't worry though, we have a lot more Men's Bike Jackets & Vests in stock than that.

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Why We Like The Alpha RoS 2 Jacket

If you aren’t easily swooned by indoor training during winter, the Alpha RoS 2 provides a feature-heavy barrier against nature’s bite, ensuring the miles are logged even in the harshest conditions. Continuing Castelli’s impeccable lineage of inclement weather, performance clothing, the Alpha RoS 2 gets a double-layered Alpha construction comprising an inner insulation layer and outer Gore-Tex Infinium wind and water barrier. The layers provide protection down to 23 degrees F as well as superior wind and water resistance to brace against pocket showers or a ride-long drencher.

Castelli manages to engineer subtle and effective traits into the Alpha RoS 2 that, at first glance go unnoticed, but act as welcomed finishing touches you’ll appreciate during mixed weather riding. Further adding to the comfort and warmth characteristics are the high neck, which prevents cold air rushing on the chest, and the double layer cuffs that seal out water and wind and allow for expert fitting under gloves. A water-resistant zipper and taped shoulder seams seal out areas that are prone to water ingress, while discreet back flaps vent out heat to maintain comfort on rides up to 50 degrees F and during intense interval sessions. Castelli adds drainage holes to the pockets, which provide an extra dose of security compared to the mesh openings of previous jackets, and a zipper side-pocket corrals valuables for the long haul.


  • Winter-ready cycling jacket faces the elements in comfort and style
  • Double layer Alpha construction insulates and shields from nature’s bite
  • Gore-Tex wind and water barrier also provide stretch in riding position
  • Water-resistant zipper and double-layer cuff discourage water entry
  • Upper-back venting channels manage heat buildup while training
  • Reflect drain holes on pockets won’t slow you down
  • Rated from 23-50 degrees F
  • Item runs small, so we recommend sizing up for best fit
  • Item #CSTZ7G0
Double Layer Alpha, [inner] insulating, [outer] GORE-TEX INFINIUM WINDSTOPPER 150
waist with drop tail
[back] venting channels
3 rear, 1 zippered
[pockets] laser-cut drainage holes
Claimed Weight
[large] 1lb 2.5oz
commuting, cross-country, cyclocross, gravel, mud/sand/snow, road cycling, trail
Manufacturer Warranty
1 year

Overall Rating

5 based on 3 ratings

Review Summary

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

Fits 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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5 out of 5 stars

February 11, 2024

One of the best technical jackets!

I've put it through the wringer

I’m a former pro cyclist who has ridden at competitive level since 1985. I have worn lots of technical cycling gear over the years and the Castelli Alpha RoS 2 Jacket is truly a stand out in outerwear! For my size and weight this jacket fits perfectly at size large, even with a medium weight base layer underneath. The construction and materials have held up in all conditions and washings. This is a warm jacket that I can wear all the way from 5° fat tire riding in Alaska - 50° road or gravel riding in Virginia and still be comfortable. It has easy to reach and protected pockets and a built-in inner layer vest that is perfect when you need to unzip and vent but still stay warm, without the outer jacket flapping around. All its other features are also excellent. A+

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Kirby N

Originally reviewed on

5 out of 5 stars

January 11, 2023

Love It

I've used it several times

Keeps me warm. Can just use a base layer and this coat, nothing else is needed and will stay warm on these cold winter days of outdoor riding. Runs small so size up. I'm normally either L or XL but went to a XXL on this coat after reading reviews and glad I did. Save $$ on the Limited Edition I guess because of the color, but a penny saved is a penny earned! It was discounted and the others weren't so I went with this one.

Jerry B

Originally reviewed on

5 out of 5 stars

January 6, 2022

Awesome jacket

I've used it several times
Size Bought:
5' 6"

This jacket performs! I?ve had it out in the low 30s with just the Castelli Flanders base layer and wasn?t either too hot or cold. It does it?s job wicking the sweat away and keeps you dry. It has kept me comfortable on cold days so far. Look forward to riding all winter with this! I?m 5? 6? and 173lbs and this jacket definitely runs small. I have the xxl and it fits perfect.

Michael S