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Castelli Mens Alpha RoS 2 Light Jacket
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Castelli Men's Alpha RoS 2 Light Jacket

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A Light Layer With Heavy Duty Action

When you need some protection from the cool air but not enough to bring out the winter jacket, you know it's time for the Castelli Alpha RoS 2. This light jacket is all about the art of dressing just right for cool conditions.

Wind protection comes from lightweight Gore-Tex Infinium™ Windstopper® 150 two-way-stretch fabric that moves with you. A separate ProSecco Strada inner layer backs this up, with a separate zip for perfect ventilation control. The back is made from Nano Flex Xtra Dry fabric for membrane-free insulation that allows sweat to escape. Featuring easy-sliding YKK® zippers, reflective drain holes on the pockets, and a lie-flat silicone gripper band around the waist for ultimate comfort.

The concepts behind the Alpha RoS 2 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.


  • Gore-Tex Infinium™ Windstopper® 150 fabric on front and sleeves
  • Nano Flex Xtra Dry on back for added moisture-moving ventilation
  • Alpha double-layer construction separates windproof layer from insulation layer
  • ProSecco Strada inner layer for lightweight insulation with moisture management
  • Double YKK® Vislon® front zippers
  • Front zippered pocket plus 3 rear pockets with reflective laser-cut drain holes
  • Raw-edge waist lies flat and moves with you

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.


Sleeve Type: Long Sleeve 

Ordered by Most Relevant First
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1 stars
Reviewed 6/27/2022
by Joe P
Cycling Enthusiast
Denver, CO
Value Rating
Overall Rating
Overall great quality

Have only worn once or twice because I bought it on sale at the end of the season. Seems a little warmer than just a "light" jacket, but I like it so far. We'll see as the weather cools...

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