Castelli Alpha RoS 2 Jacket

GBP 182.69
from £182.69

Save: £117.31


( 0 item is in your basket items are in your basket )


In stock - Usually dispatched within 24 hours

Live Chat

Average connection time 25 secs

Average connection time 25 secs

The Alpha RoS 2 Jacket from Castelli is the ultimate winter jacket bringing warmth, high breathability, and protection against the rain along with a soft and comfortable fit.

The exterior of the jacket is made from GORE-TEX INFINIUM WINDSTOPPER fabric. The lightweight fabric has a unique membrane that delivers the triple crown of being completely windproof, highly breathable, and water repellent, while offering insulation.

Minimal seaming and seam sealed shoulders eliminate points where moisture can enter the jacket when you are venturing through mist, wet roads, and even incessant light rain.

The unique dual-layer construction of the Alpha is where its insulating qualities really excel. Underneath the exterior layer, the Alpha jacket has an internal vest that hugs close to your body. This offers insulation suitable down to -5C, and it also means you can regulate your temperature with ease. You can open the external layer to allow airflow into the jacket and evacuate moisture without sacrificing insulation and exposing your body to wind chill.

A double-layer cuff integrates with winter gloves and a lie-flat waist hugs close to the body to prevent cold from entering at the jackets openings.

The stretch fabric is in an updated pattern with a narrower panel between the shoulders and a wider front that makes for a close-to-body fit that minimises flapping and better reflects the shape of your body on the bike. The new cut accommodates a wide range of body types and positions on the bike.

Key Features

  • GORE-TEX INFINIUM WINDSTOPPER 150 fabric. Highly breathable wind protection and effective rain protection
  • Minimal seaming with seam sealed shoulders reduces chances for water to enter through stitching
  • Double-layer Alpha construction separates insulating layer from the wind/water external barrier to let you better regulate ventilation
  • Water-resistant YKK Vislon zipper slides easily
  • Raw-edge waist with silicone gripper lies flat and seals out wind
  • Double-layer cuff integrates with glove to prevent cold wind and water entering
  • Stretch fabrics with advance patterning for excellent close to body fit
  • Back ventilation
  • 3 rear pockets with reflective laser-cut drain holes
  • Zippered secure side pocket for valuables
  • -5 10C / 23 50F
  • Weight: 525g (Large)

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock

Express Delivery

If ordered before 11pm, delivered by courier next working day.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

Customer Reviews

Overall Rating : 5.0 / 5 (2 Reviews)
  • 2 5 star reviews
  • 0 4 star reviews
  • 0 3 star reviews
  • 0 2 star reviews
  • 0 1 star reviews

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.


Excellent jacket. Careful with sizing Tight, racing fit. I ordered a large based on the suggested measurements. Exchanged for an XL. Fits much better.

Great Piece of Kit

This jacket does everything that Castelli claim. As they admit, it's not perfectly waterproof, so if you're riding in a deluge lasting many hours, you will get wet. But it will keep you dry through heavy showers and it will keep you warm, too, because it's wonderfully windproof. The best feature, and the main reason why I bought it, is the double layer cuff that can be arranged to overlap your gloves so that rainwater is not channelled inside them. If I have one slight criticism, it's that the fabric is not very stretchy, so the rear pockets do not have much "give". All-in-all, it's an asset for my cycling wardrobe.