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Castelli Mens Alpha RoS 2 Jacket Light Black/Black Reflex-Matte Blue
Castelli Mens Alpha RoS 2 Jacket Light Black/Black Reflex-Matte Blue
Castelli Mens Alpha RoS 2 Jacket
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Castelli Mens Alpha RoS 2 Jacket Light Black/Black Reflex-Matte Blue
Castelli Mens Alpha RoS 2 Jacket Light Black/Black Reflex-Matte Blue
Castelli Mens Alpha RoS 2 Jacket

Castelli Men's Alpha RoS 2 Jacket

Mfg PartNum:
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Bring On The Wind And Rain!

Prepare for miserable weather in style with the Castelli Men's Alpha RoS 2 Jacket, perfect for handling the toughest conditions — rain or shine. This ultimate jacket delivers warmth, breathability, and a high level of rain protection along with a soft and comfortable fit.

As the third generation, this jacket begins with the wind- and waterproof Gore-Tex Infinium™ Windstopper® 150 fabric. Rain or Shine engineering makes for a ride at home in dry conditions as well as wet and windy. Reduced seaming with seam sealing on shoulders as well as the water-resistant YKK® Vislon® zipper reduces chances for rain to ruin your ride. Double-layer Alpha construction separates the insulating layer from the wind and water barrier to let you better regulate ventilation.

The Alpha RoS 2 uses stretch fabrics with advanced patterning for an excellent close-to-body fit that still accommodates a wide range of body types.


  • Wind- and waterproof Gore-Tex Infinium™ Windstopper® 150 fabric
  • Reduced seaming and seam sealing on shoulders reduces water
  • Double-layer Alpha construction separates layers to regulate ventilation
  • Water-resistant YKK® Vislon® zipper slides easily
  • Raw-edge waist with silicone gripper lies flat to seal out wind
  • Double-layer cuff integrates with glove to prevent cold wind or water
  • Stretch fabrics with advanced patterning for close-to-body fit
  • Back ventilation keeps you cool with supreme airflow
  • Three rear pockets with reflective laser-cut drain holes
  • Zippered secure side pocket for valuables

Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

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.

This product is NOT Eligible for VIP Points.

Castelli Mens Alpha RoS 2 Jacket
A newer version of this product is available.
Sale Price $292.49

Sleeve Type: Long Sleeve 

Mfg PartNum: B20502075-3 

Military Green/Fiery Red-Silver Gray - Medium

Mfg PartNum: B20502075-3 

Military Green/Fiery Red-Silver Gray - Large

Mfg PartNum: B20502075-4 

Military Green/Fiery Red-Silver Gray - X-Large

Mfg PartNum: B20502075-5 

Military Green/Fiery Red-Silver Gray - 2X-Large

Mfg PartNum: B20502075-6 

Light Black/Black Reflex-Matte Blue - Medium

Mfg PartNum: B20502085-3 

Light Black/Black Reflex-Matte Blue - Large

Mfg PartNum: B20502085-4 

Light Black/Black Reflex-Matte Blue - X-Large

Mfg PartNum: B20502085-5 

Light Black/Black Reflex-Matte Blue - 2X-Large

Mfg PartNum: B20502085-6 

Savile Blue/Red - Medium

Mfg PartNum: B20502414-3 

Savile Blue/Red - Large

Mfg PartNum: B20502414-4 

Savile Blue/Red - X-Large

Mfg PartNum: B20502414-5 

Savile Blue/Red - 2X-Large

Mfg PartNum: B20502414-6 

Red/Silver Reflex-Dark Gray - Medium

Mfg PartNum: B20502023-3 

Red/Silver Reflex-Dark Gray - Large

Mfg PartNum: B20502023-4 

Red/Silver Reflex-Dark Gray - X-Large

Mfg PartNum: B20502023-5 

Red/Silver Reflex-Dark Gray - 2X-Large

Mfg PartNum: B20502023-6 

Nickel Gray/Black Reflex-Black - Medium

Mfg PartNum: B20502064-3 

Nickel Gray/Black Reflex-Black - Large

Mfg PartNum: B20502064-4 

Nickel Gray/Black Reflex-Black - X-Large

Mfg PartNum: B20502064-5 

Nickel Gray/Black Reflex-Black - 2X-Large

Mfg PartNum: B20502064-6 

Electric Lime/Dark Gray-Dark Gray - Small

Mfg PartNum: B20502383-2 

Electric Lime/Dark Gray-Dark Gray - Medium

Mfg PartNum: B20502383-3 

Electric Lime/Dark Gray-Dark Gray - Large

Mfg PartNum: B20502383-4 

Electric Lime/Dark Gray-Dark Gray - X-Large

Mfg PartNum: B20502383-5 

Electric Lime/Dark Gray-Dark Gray - 2X-Large

Mfg PartNum: B20502383-6 

Light Black/White-Dark Gray - Small

Mfg PartNum: B20502851-2 

Light Black/White-Dark Gray - Medium

Mfg PartNum: B20502851-3 

Light Black/White-Dark Gray - Large

Mfg PartNum: B20502851-4 

Light Black/White-Dark Gray - X-Large

Mfg PartNum: B20502851-5 

Light Black/White-Dark Gray - 2X-Large

Mfg PartNum: B20502851-6 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 12/28/2021
by dmmd
Stanwood, WA
Overall Rating
3 of 4 customers found this review helpful.
Excellent winter jacket

I already have a Castelli Perfetto jacket that's very versatile through a wide temperature range with different base layers, but I wanted something more specific for colder temperatures that was comfortable without the bulk of a thicker base layer. This is that jacket. Very comfortable. Not even a chill in the low 30's with only a short-sleeve base layer. The double layer cuffs absolutely keep the cold from going up the sleeves. The wind blocking is excellent. The insulating front inner layer extends into the sleeves and makes it cozy and yet it's still quite breathable. I wasn't sure I needed another jacket, but now I know I did.

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Reviewed 12/30/2021
by Al
Cycling Enthusiast
Auburn, CA
Value Rating
Overall Rating
1 of 2 customers found this review helpful.
Fits the bill and more

This is an expensive jacket, no doubt.But if you don't feel like freezing on the bike is what makes you strong, then consider this as the one jacket that will keep you riding. I have ridden in freezing fog, cold windy days, and something less than a downpour and this jacket did the trick. I like that there are two layers with zippers you can use to regulate warmth. I like that it is not bulky and maintains aerodynamics for the downhills. I like that the zipper is easy to find with gloves on and vent as needed for the uphills. I especially like that I don't finish a ride feeling like I need to squeegee the sweat off me before a post ride coffee. It was the jacket I asked for when we moved from the desert to the mountains, and I am glad I did.

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Reviewed 3/27/2022
by Anonymous
Western NY state
Overall Rating
5 of 5 customers found this review helpful.
Excellent jacket

I'm 5'6" and 150#. The large fits perfectly. I used it with different base layers into the 20s F.

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