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Castelli Alpha RoS 2 Light Jacket

Castelli Alpha RoS 2 Light Jacket
  • Color: Dark Gray
  • Color: Dark Gray
  • Color: Fiery Red
  • Color: Fiery Red
  • Color: Light Black
  • Color: Light Black
  • Color: Pro Red
  • Color: Pro Red
  • Color: Savile Blue
  • Color: Savile Blue
$279.99 - $289.99
Please select options


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 the 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.

- 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 the 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 the windproof layer from an insulation layer, allowing better ventilation management
- Inner layer in ProSecco Strada for lightweight insulation with effective moisture management
- Double YKK Vislon front zippers
- Front zippered pocket
- 3 rear pockets with reflective laser-cut drain holes
- Raw-edge waist lies flat and moves with you

Part Numbers

Option UPC MPN Store SKU
Dark Gray / Small 08050949222386 B20503030-2
Dark Gray / Medium 08050949222393 B20503030-3
Dark Gray / Large 08050949194263 B20503030-4
Dark Gray / X-Large 08050949222409 B20503030-5
Dark Gray / XX-Large 08050949222416 B20503030-6
Dark Gray / XXX-Large 08050949222423 B20503030-7
Fiery Red / Small 08050949222614 B20503656-2 CAS52232520S
Fiery Red / Medium 08050949222621 B20503656-3 CAS52525269M
Fiery Red / Large 08050949222638 B20503656-4 CAS52203080L
Fiery Red / X-Large 08050949222645 B20503656-5 CAS53229438L
Fiery Red / XX-Large 08050949222652 B20503656-6 CAS54953233L
Fiery Red / XXX-Large 08050949222669 B20503656-7 CAS5414212L
Light Black / Small 08050949222430 B20503085-2 CAS55194637S
Light Black / Medium 08050949222447 B20503085-3 CAS55117227M
Light Black / Large 08050949222454 B20503085-4 CAS55388502L
Light Black / X-Large 08050949222461 B20503085-5 CAS56941253L
Light Black / XX-Large 08050949222478 B20503085-6 CAS57848187L
Light Black / XXX-Large 08050949222485 B20503085-7 CAS57945962L
Military Green/Fiery Red-Black / Small 08050949392942 B20503075-2 CAS55611572S
Military Green/Fiery Red-Black / Medium 08050949392959 B20503075-3 CAS55747454M
Military Green/Fiery Red-Black / Large 08050949392966 B20503075-4 CAS55996314L
Military Green/Fiery Red-Black / X-Large 08050949392973 B20503075-5 CAS56295230L
Military Green/Fiery Red-Black / XX-Large 08050949392980 B20503075-6 CAS57817694L
Military Green/Fiery Red-Black / XXX-Large 08050949392997 B20503075-7 CAS57352363L
Pro Red / Small 08050949222553 B20503622-2
Pro Red / Medium 08050949222560 B20503622-3
Pro Red / Large 08050949222577 B20503622-4
Pro Red / X-Large 08050949222584 B20503622-5
Pro Red / XX-Large 08050949222591 B20503622-6
Pro Red / XXX-Large 08050949222607 B20503622-7
Savile Blue / Small 08050949222492 B20503414-2 CAS47576321S
Savile Blue / Medium 08050949222508 B20503414-3 CAS47393031M
Savile Blue / Large 08050949222515 B20503414-4 CAS47707070L
Savile Blue / X-Large 08050949222522 B20503414-5 CAS48964123L
Savile Blue / XX-Large 08050949222539 B20503414-6 CAS49473636L
Savile Blue / XXX-Large 08050949222546 B20503414-7 CAS49789240L
Silver Gray/Chartreuse-Dark Gray / Small 08050949393000 B20503870-2 CAS57490043S
Silver Gray/Chartreuse-Dark Gray / Medium 08050949393017 B20503870-3 CAS57289446M
Silver Gray/Chartreuse-Dark Gray / Large 08050949379349 B20503870-4 CAS57463215L
Silver Gray/Chartreuse-Dark Gray / X-Large 08050949393024 B20503870-5 CAS58344980L
Silver Gray/Chartreuse-Dark Gray / XX-Large 08050949393031 B20503870-6 CAS59226357L
Silver Gray/Chartreuse-Dark Gray / XXX-Large 08050949393048 B20503870-7 CAS59233509L