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ALPHA RoS 2 LIGHT JACKET

Castelli's best jacket for mild conditions, with front wind protection, light insulation, maximum breathability, and water repellency to keep you dry in mist, light rain or spray from wet roads. This is a Castelli staff favorite thanks to the wide temperature range, fit and versatility.

$289.99 1 2 3 4 5  5  (1 reviews)

Color: MILITARY GREEN/FIERY RED-BLACK

|

4520503-075

ALPHA RoS 2 LIGHT JACKET

$289.99 1 2 3 4 5  5  (1 reviews)

Color: MILITARY GREEN/FIERY RED-BLACK

|

4520503-075

View size guide

Product features

  • GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric on front and sleeves for wind protection with high breathability and effective rain protection
  • Nano Flex Xtra Dry on back for more ventilation allows heat and sweat to escape while shedding rain thanks to a nanotechnology water-repellent finish
  • Alpha double-layer construction separates windproof layer from insulation layer, allowing better ventilation management
  • Inner layer in ProSecco Strada for lightweight insulation with effective moisture management
  • Double YKK® Vislon® front zippers
  • Zippered secure side pocket for valuables
  • 3 rear pockets with reflective laser-cut drain holes Raw-edge waist lies flat and moves with you
  • GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric on front and sleeves for wind protection with high breathability and effective rain protection
  • Nano Flex Xtra Dry on back for more ventilation allows heat and sweat to escape while shedding rain thanks to a nanotechnology water-repellent finish
  • Alpha double-layer construction separates windproof layer from insulation layer, allowing better ventilation management
  • Inner layer in ProSecco Strada for lightweight insulation with effective moisture management
  • Double YKK® Vislon® front zippers
  • Zippered secure side pocket for valuables
  • 3 rear pockets with reflective laser-cut drain holes Raw-edge waist lies flat and moves with you

Technical Features

Insulation

Waterproofness

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Waterproofness tooltip 

Windproofness

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Windproofness tooltip 

Breathability

Lightness

  • Weight:421 g
  • Temperature:7°C - 15°C / 45°F - 59°F
  • Fit:Performance
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    Fit tooltip

What It Is

Castelli's best jacket for mild conditions, with front wind protection, light insulation, maximum breathability, and water repellency to keep you dry in mist, light rain or spray from wet roads. This is a Castelli staff favorite thanks to the wide temperature range, fit and versatility.
RoS - Rain or Shine

We’ve engineered RoS as the no-compromise best clothing we know how to make for dry conditions, and then tried to make it as close to waterproof as possible without sacrificing breathability and ventilation.

GORE-TEX INFINIUM™ WINDSTOPPER®

Gore-Tex® garments provide total wind protection and maximum breathability. The windproof membrane keeps you from getting cold due to windchill, but the optimum breathability prevents overheating and moisture accumulation by allowing sweat to escape easily. Water repellency is ensured by the DWR treatment applied to the outer fabric.

Our Rosso Corsa label is only applied to the highest-level products we make. Every thread and fiber, every curve and contour is obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli’s performance-enhancing apparel.

Nano Flex

Exclusively engineered by Castelli. We take our thermal fleecy stretch Thermoflex fabric and coat it with millions of tiny nanofilaments to create the most water-repellent fabric finish ever. Drops of water stay as spherical balls on top of the fabric or bounce off the fabric without leaving a trace.

This jacket is about the art of dressing just right for cool conditions. We're talking about those days when you need some protection from the cool air but not enough to bring out the winter jacket. Overdress and you'll be sweating and get cold because you're wet. Underdress and you never fully warm up to enjoy the ride. The concepts behind the construction are fairly simple: wind protection on front-facing surfaces, highly breathable fabrics on back-facing surfaces, and all-around water repellency in case you get a few drops of rain. But what makes this jacket spectacular is how we executed these simple concepts. The wind protection comes from our GORE-TEX INFINIUM™ WINDSTOPPER® lightweight two-way-stretch fabric that moves with you while being so light you'll hardly notice it's there. This light wind layer is backed by a separate ProSecco Strada inner layer with a separate zip that can be opened independently for perfect ventilation control. The back is made from our Nano Flex Xtra Dry fabric that provides a good level of insulation yet has no membrane so allows for ample amounts of sweat to escape. The fit is close to body so there is no fabric flapping around, while the little details make the difference: easy-sliding YKK® zippers, reflective drain holes on the pockets, a lie-flat silicone gripper band around the waist. All these features are why this jacket is consistently named a favorite among Castelli staffers. We think it will be one of your favorites too.
Rewies

What our customers say about us.

5

1

2

3

4

5

1 reviews

Tactical tool for Winter Riding

17/01/2023

I invested in the ALPHA RoS 2 LIGHT JACKET this year to provide me the ability to ride more in the cold, winter months. Let's say before purchasing this jacket, I was a bit more selective on what days and temperatures I would or could comfortably ride in. This jacket has not disappointed me! It provides me with comfortable wind and thermal protection with added light rain protection.
Look and Feel: Quality and feel is great. The material has a smooth, quality feel to it, yet not heavy or bulky. Check sizing carefully as I normally wear a U.S. large, but bought the XL, and fits perfectly.

My use so far: I'll take my last ride as an example: Thirty plus mile ride. Weather was mid to upper 40s (Fahrenheit), partly cloudy. I wore a thermal jersey under the jacket. I was completely comfortable. Kept me warm and shielded from frontal wind and cold. Back provided plenty of ventilation. I have had previous colder rides and was quite comfortable with a thermal jersey underneath. The ability to zip/unzip outer layer and the inner vest-like layer is awesome. It works well to help regulate my temp especially when I'm pushing it or expending more power.

I like the added secure zipper pocket on the left side. I use this for valuables, keys etc. The zipper position is a bit tough to open and close due to its location on your side. Harder to open with winter gloves... I take my glove off to open or access the pocket. But having a secure spot for my valuables has been great.

Bonus - Visibility is quite important to me especially in winter when rides can be during darker times. I love the bright green color and the reflective elements on the jacket.
I hope this helps others decide if this is the jacket for them!

Randy Pearson

1

2

3

4

5

5

Tactical tool for Winter Riding

17/01/2023

I invested in the ALPHA RoS 2 LIGHT JACKET this year to provide me the ability to ride more in the cold, winter months. Let's say before purchasing this jacket, I was a bit more selective on what days and temperatures I would or could comfortably ride in. This jacket has not disappointed me! It provides me with comfortable wind and thermal protection with added light rain protection.
Look and Feel: Quality and feel is great. The material has a smooth, quality feel to it, yet not heavy or bulky. Check sizing carefully as I normally wear a U.S. large, but bought the XL, and fits perfectly.

My use so far: I'll take my last ride as an example: Thirty plus mile ride. Weather was mid to upper 40s (Fahrenheit), partly cloudy. I wore a thermal jersey under the jacket. I was completely comfortable. Kept me warm and shielded from frontal wind and cold. Back provided plenty of ventilation. I have had previous colder rides and was quite comfortable with a thermal jersey underneath. The ability to zip/unzip outer layer and the inner vest-like layer is awesome. It works well to help regulate my temp especially when I'm pushing it or expending more power.

I like the added secure zipper pocket on the left side. I use this for valuables, keys etc. The zipper position is a bit tough to open and close due to its location on your side. Harder to open with winter gloves... I take my glove off to open or access the pocket. But having a secure spot for my valuables has been great.

Bonus - Visibility is quite important to me especially in winter when rides can be during darker times. I love the bright green color and the reflective elements on the jacket.
I hope this helps others decide if this is the jacket for them!

Randy Pearson

1

2

3

4

5

5
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