Castelli Alpha Ros Jacket

now from £157.99 save 3.66%

Available to buy and prices from the following retailers:

  • Buy it Now BikeINN - £157.99
  • More than 10 available!

    see all our Jackets or all our Castelli deals
    browse all Castelli Jackets offers
    price updated: 13/12/2025

    Castelli Alpha Ros Jacket

    Castelli´s ultimate jacket, bringing warmth, breathability and a high level of rain protection along with a soft, comfortable fit.With a fresh update in its third generation, this jacket leads the way in demonstrating how a winter jacket should perform.Features:Rain or Shine engineering makes this our best jacket ever for dry conditions while also providing significant rain protection.GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric for wind protection with high breathability and effective rain protection.Reduced seaming with seam sealing on shoulders reduces chances for water to enter through stitching.Double-layer Alpha construction separates insulating layer from wind/water barrier to let you better regulate ventilation.Water-resistant YKK® Vislon® zipper slides easily for better regulation of airflow.Raw-edge waist with silicone gripper lies flat and seals out wind.Double-layer cuff integrates with glove to prevent cold wind or water from entering at wrist.Stretch fabrics with advanced patterning make for excellent close-to-body fit that still accommodates a wide range of body types.Back ventilation.3 rear pockets with reflective laser-cut drain holes.Zippered secure side pocket for valuables.This jacket is exactly what we think the perfect winter jacket should be.We started with a list of things we didn´t like about the current jackets and set out to solve them—and in the process make our best jacket ever.The first issue to resolve related to moisture management.Even the best of the currently available fabrics provide a good level of breathability but can´t keep up with the sweat generated during high-intensity riding.So we invented a double-layer construction that allows you to open an outer wind-protection layer while keeping the insulation layer closed and thereby allowing airflow inside the jacket to evacuate moisture while avoiding direct contact with the skin.On a long climb we´ll completely open the outer layer to allow moisture to escape, and when we start the descent we close the outer layer and are completely dry inside.It works so well that sometimes it feels like magic.New for this year is a softer, warmer 3D insulation-layer fabric that provides better warmth, moisture management and fit.Next we focused on the openings:neck, waist and, most of all, wrists.The neck comes up high and is shaped to move with you, whether you´re standing or in an aero position being a January hero and attacking your mates.For the waist we´ve created a stretch layer with a silicone bead that lies flat and completely seals out wind without bunching or riding up.New for this year is a brand-new double-layer wrist opening with an inner layer to go under your glove that seals tight to your wrist, and an outer layer that goes over your glove so that any rain will roll down the outside of the glove and not end up inside.Of course, the ultimate jacket will also hold up well in wet conditions, so we used GORE-TEX INFINIUM™ WINDSTOPPER® fabric along with waterproof seam taping on critical seams around the shoulder.Other seams are hidden out of direct water flow, and the water-repellent treatment on the fabric is sufficient to prevent most moisture from entering.We call it ´´essentially waterproof,´´ using our own subjective judgment to find a balance between water protection, breathability and comfort.It doesn´t mean that no drop will ever come in, but we do longish rides in real rain and stay completely dry.All these features make it a favorite of the INEOS Grenadiers riders, and the most versatile performance jacket for cold-weather training we´ve ever created. Find out more...

    Other Colours and Sizes:

    About: Castelli

    Castelli is a leading brand in the cycling industry, known for its high-performance cycling apparel and accessories. The brand has a rich history, dating back to 1876, and has been a favorite of professional cyclists for many years. Castelli offers a range of cycling clothing, including jerseys, shorts, and jackets, that are designed to maximize comfort and performance. The brand is known for its innovative fabrics and construction techniques, such as its use of windproof and water-resistant materials. Castelli also offers a range of cycling accessories, including gloves, hats, and socks, that are designed to complement its clothing line. With a focus on quality, innovation, and performance, Castelli is a popular choice for serious cyclists looking for top-of-the-line gear.

    About: BikeINN

    The Tradeinn network stands as a trailblazer in the realm of online retail, carving a niche as the premier platform specializing in the sale of sports equipment to a diverse clientele spanning Europe. Operating seamlessly across 220 countries, the network has earned the distinction of being the official retailer for an impressive array of 2000 sports brands. Beyond their core specialization, Tradeinn continues to diversify its portfolio by introducing new stores in various industries. This expansion showcases their commitment to meeting the evolving needs of consumers. What sets Tradeinn apart is not only its extensive reach and brand partnerships but also its unwavering dedication to customer satisfaction. With a meticulously curated inventory featuring thousands of top-tier products, the Tradeinn network emerges as the go-to choice for publishers with a keen focus on sports, outdoor activities, children's lifestyle, or cutting-edge tech products.

    Latest Cycling Deals & Promos from BikeINN

    Browse our latest cycling promos and vouchers now and start saving on everything from cycling jerseys and shoes to road bikes and electric bikes!!!