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Castelli Alpha Ros Womens Windproof Cycling Jacket

Now £162.00
Save 38% RRP: £260.00
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Note: Castelli size their clothing small. For the best fit, go up one size

Product Description

RAIN OR SHINE. BRING IT ON

When we came out with the original Alpha Jacket, we wrote, “Throw out everything you think you know about cycling jackets.” 

We’ve done it once again. So throw out everything you think you know about cycling jackets.

Until now, your cycling wardrobe has consisted of clothing for dry weather and separate clothing for wet weather. You never wore your wet-weather clothing in dry conditions because it was too clammy inside and too flappy outside. And your dry-weather clothing just didn’t hold up to rain. The Gabba and Perfetto family helped bridge that gap, but the Alpha RoS takes it to another level.

We started by keeping everything that made the original Alpha Jacket your favorite dry-weather jacket: the two-layer construction to separate the insulation layer from the outer shell, the double front opening to diffuse the cold air when you open up to ventilate, the excellent breathability, the flat wrist and waist openings, the articulated collar, the insanely soft stretch fabrics, and the great fit.

By using Gore’s new Windstopper® light rain-resistant membrane and DWR treatment, selective seam sealing, careful seam placement and construction, and a waterproof YKK® Vislon® zipper, we’ve made the jacket essentially waterproof while not compromising the characteristics that made it such a great dry-weather jacket. 

The outdoor industry has traditionally determined what counts as “waterproof”: minimum 10,000mm water column and complete seam taping. But that definition means too many compromises in the overall usability of the jacket, in the softness, in the fit, and in the jacket’s overall ability to keep you dry and comfortable by maximizing breathability. So we set our own definition of real-world usability and went out and tested this on the nastiest days of our Italian fall. An occasional drop may come in through a seam, but you’re going to stay warm and dry because the jacket keeps nearly all water out from the outside while letting most moisture out from the inside.

This jacket feels like a game changer. It’s a significant step toward Castelli’s goal of making clothing that performs impeccably in the dry but offers complete water protection in the rain. And it will make your riding enjoyable, rain or shine.

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Key Features:
  • Rain or Shine engineering provides insulation and breathability for cold and dry rides, with effective waterproofing for wet rides
  • Gore® Windstopper® 150 fabric provides wind protection with high breathability and effective rain protection
  • Seam sealing on shoulders, reduced seaming and double stitching keep you mostly dry
  • Alpha construction separates wind/water protection layer from insulating layer
  • Better ventilation and better moisture evaporation thanks to separate insulating layer
  • Partially covered waterproof YKK® Vislon® zipper slides easily and lies flat
  • Raw-edge waist lies flat and moves with you
  • Raw-edge wrist cuffs lie flat for a perfect interface with gloves
  • Stretch fabrics with advanced patterning make for an excellent close-to-body fit that still accommodates a wide range of body types
  • Back ventilation
  • Weight: 399g

Occasionally, without notice, manufacturers change product design and/or specifications.

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Castelli Size Chart

Castelli

Castelli Clothing Sizing Guide

Use the Castelli size chart to find the best fit for you.

Note: Castelli size their clothing small. To ensure an optimal fit it is recommended you go up one size, compared to your normal cycle clothing size. 

Castelli Men's Sizing

  S M L XL 2XL 3XL
Chest 92cm 96cm 100cm 105cm 110cm 115cm
Waist 80cm 84cm 88cm 93cm 98cm 104cm
Hips 94cm 98cm 102cm 107cm 112cm 116cm
Inseam 82cm 83cm 84cm 85cm 86cm 87cm

Castelli Women's Sizing

  XS S M L XL
Chest 79cm 84cm 89cm 94cm 99cm
Waist 63cm 68cm 73cm 78cm 83cm
Hips 87cm 92cm 97cm 102cm 107cm
Inseam 75cm 76cm 77cm 78cm 79cm

Read our clothing size guide for more information on sizing.

Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!

Windproof Jackets Guide

 

Windproof Jackets Guide

When the mercury drops most people turn to putting to layering up to keep warm. However, when you’re cycling the last thing you want is to feel like the Michelin man, bound up, inflexible and uncomfortable. As you ride you’ll get warm very quickly, wearing all those layers will make you sweaty.

Why not choose a windproof cycling jacket instead? They’re ideal for cold dry winter days with most offering some type of light rain protection as well. Windproof jackets tend to be lighter than a waterproof model and are much more breathable.

You can also check out our waterproof cycling jacket guide if you’re planning to ride in the rain. By the end of our windproof cycling guide, you should have all the info you need to buy the right jacket.


Types of Windproof Jacket

Packable Windproof Jacket
| Spring & Autumn

For cool rather than cold rides, a packable windproof jacket may be all you need to keep the chill off. These jackets are very lightweight and are usually made of a single layer of fabric. They’re only a simple barrier between your skin and the elements.

However, these jackets usually have good breathability to stop you from feeling clammy on the inside. Even if it rains, a packable will dry quickly. Most can be rolled up into a small package and will fit in a spare jersey pocket.

Lightweight windproof jacket

Softshell Windproof Jacket
| Spring, Autumn & Winter

Softshell windproof jackets have been gaining popularity for a few years now. They’re heavier than a packable to block more wind and are smooth against your skin for a comfortable feel.

Softshell jackets can be worn over a base layer or a jersey on colder rides without the need for multiple layers to keep you warm. Many are treated with water resistance for light rain protection making them a practical jacket for a wide range of UK riding conditions. You can also pair a softshell with a lightweight packable waterproof jacket for maximum protection.

Softshell windproof jacket

Fabric

The fabric is key to performance. Generally, the more you spend on a jacket the lighter and thinner the fabric will be. Breathability will improve as well, letting your sweat evaporate quickly.

Gore Windstopper is popular fabric laminating a lightweight membrane to the fabric. It’s designed to keep the wind out and will also help shed light rain too.

Other systems will include an inner lining, middle windproof membrane and then the outer layer, usually treated with DWR water repellency. This design keeps the wind out while staying breathable.

We’ve put together a technical fabric guide for clothing detailing the key fabrics from some of the biggest brands in the industry.

Gore Windstopper Jacket

Fit

Windproof jackets come in many styles, so choose the type best suited to your riding. If you plan on training or racing, then a tighter fit with minimal excess fabric will help prevent drag as you ride.

If you’re commuting or riding off-road then a loose cut with more freedom of movement is a good option.

Cycle Specific Features

Bike Jacket Drop Tail

Extended drop tail:

Keeps your lower back protected from the elements

Bike Jacket high waist

Raise waist:

Stops excess fabric bunching up and causing discomfort

Bike jacket preshaped arms

Pre-shaped (articulated) arms:

For greater comfort when in a cycling position

Bike jacket longer arms

Longer arms:

To ensure full coverage when cycling

Bike jacket waist gripper

Waist gripper:

Prevents the jacket from riding up

Bike jacket velcro cuffs

Velcro cuffs:

Offer a tighter fit to eliminate cooling breeze

Bike jacket high neck

High neck:

Provides more coverage

Bike jacket rear pockets

Rear pockets:

For stashing ride essentials, a security chest pocket is also a good feature

Bike jacket full length zip

Full-length zip:

With a good puller for easy use with thick gloves on and a zip garage to stop chafing

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Delivery & Guarantee

UK Delivery Information

Please Note: Due to the current circumstances we are experiencing high demand so we may take a little longer than usual to despatch your order. Our Warehouse and Bike Build team are up and running as normal and we are taking active measures to ensure that we are following the government guidance with social distancing and additional health & safety measures have been put in place throughout the business. Please rest assured we will do everything we can to get your order to you as quickly as possible.

We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.

Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

Please note that Pre-Order dates can sometimes change due to updated stock information.

Click here for more UK and international delivery information.

International Deliveries - Temporarily Suspended 30/3/20

Covid-19 Update

During the Covid-19 outbreak we will be stopping all international deliveries until further notice. We will continue deliveries to the UK, Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Ireland, Northern Ireland, Isle of Wight, Jersey and Guernsey.

If you have any queries, please contact our Customer Service Team. The best way to contact us is to use Live Chat by clicking the widget at the bottom right of your screen.

Click here for more UK and international delivery information.

Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns. 

We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.

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