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Castelli Mortirolo WindStopper Jacket

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Item # CST0440

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Item # CST0440


Named after the famous Cima Pantani -- a brutal pass in the Italian Alps -- the Castelli Mortirolo Windstopper Jacket is perfect if you're lucky enough to live in a place where winter isn't all that cold. Taking several cues from Castelli's more heavy-duty Espresso Due Jacket, the Mortirolo provides many of the same features while being geared for more moderate temperatures (those higher than 46 degrees F).

The Mortirolo is basically a jacket made in two parts. The front uses Windstopper X-Fast, a fabric constructed using high-tech circular interlocking polyester to provide total wind protection. However, Castelli realizes that cyclists in temperate climates don't require full Windstopper coverage so the back of the Mortirolo is made from Warmer, a 100% polyester fabric that's soft and fleecy to keep you warm while wicking moisture away to keep you dry. This combination of windproof and permeable materials protects your body from the wind, yet helps you avoid overheating.

Breathability is further enhanced by the addition of two vertical zippers down the front of the jacket. Ever hit the summit of a long climb in cold weather only to freeze going down the other side? The jacket's chest vents address this problem: simply unzip them while climbing to let heat and moisture escape, then close them while descending to once again block the wind and insulate your torso.

The Mortirolo Jacket comes with three rear pockets for your riding essentials, plus it has an internal MP3 player/phone pocket and a cable port for your headphones. Castelli's YKK camlock zipper stays flat while the zipper head is down, and rear reflective tabs improve visibility on gray winter training rides.

The Castelli Mortirolo Windstopper Jacket is available in four color combinations -- Anthracite/black, Cyan/black/white, Red/black/white, and White/black/anthracite. It comes in six Castelli-specific sizes from Small through XXX-Large. Like most Castelli clothing, the Mortirolo is designed to be form-fitting as the technical fabrics used to construct the jacket work best when in close contact with your body. Be sure to check the sizing chart to ensure proper fit.

Tech Specs

Recommended Use:
cold-weather cycling

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Here's what others have to say...



    Probably one of the best all round garments I’ve ever owned in my 40 years of riding. Pockets perfectly designed—BIG. They are pleated on bottom so jersey doesn’t pull off back at hem allowing cold snow melt under your jacket. Also, they don’t go all the way to the hem, so the hem stays put. If crud does manage to creep in, the grabber is sewn on both top and bottom so it doesn’t accumulate road crud under the grabber.

    Chest vents only work in combination with opening main front zip. The air then flows through surprisingly well. I’ve opened front vents alone at -12C, and they don’t really do much w/o front zip open.

    Material seems to be the same as Polare tight, but stitching is better. Zips are plenty beefy, and workable w/lobster mitt.

    Temp range is 50 to, so far, 15F w/ a lot of small-ring-downhill wind. At 50, you need to have all zips open & its still a chore, but doable if say you’re doing a crack-o-dawn & it warms up. At 40, start with a light base, at 15 wear a real, true, task-specific, mid-weight layer e.g. Icebreaker 260 (320 is really a lot). Cut is—surprisingly—not Italian, its more of a semi-fitted (2xl, 6-3, 225lbs) so you can layer it. Given this success, don’t know why you would go for the less breathable e.g. Due, Stelvio, or 1-2-3.

    BTW at 15, I was good for three hours in: Gore thermo booties over Castelli belgian booties over Walmart over-calf wool hunting socks & wool socks under shoes. Use Amfib tight, w/”Thermo-Robioux “ knee warmers underneath (Capo LE). Giro 100 proof gloves, and Gore WS balaclava. Get insulated water bottle or your water will freeze. Yeah, dressed as above, I was sweating a lot underneath, and got a nasty dehydration headache because no water.


    Almost perfect...almost.

      This is well designed jacket that with some base layers could be taken down to the mid 30's. It looks great and the cut is form fitting without being restricting. For reference I'm 5'11", 175 with a 41 chest and the XL is a bit large while the L is more race fit but with room for a base layer or two. The fold up rear collar works well and the arms are nice and long. The front zip chest vents help you to keep cool on climbs and the rear pockets are in the right place, no arm cramps contorting to get things out of or into them. However, a few design flaws keep the Mortirolo WS from getting an A. The front zip chest vents have no draft flap so even closed they create cold spots. Below 40 f. you can feel it. No zipper garage. Castelli has no excuse for this when even mid range cycling jackets have it featured. When your face is freezing and getting wind burned and the hard plastic zipper is rubbing your neck and chin raw you wonder how they could have omitted it. I'd love to see a double zipper but no points off for not having one. So overall I give it a B+. The lack of the zipper garage and cold spots at the vents are minor issues I agree but at $200 they shouldn't be missing.


      Fantastic choice

        Fantastic jacket. Ive taken several rides thus far with it in 30-40 degree, in both hazy and clear (read cold wind) weather, and have been so happy that I'm not freezing my tail off! The size is snug, and that actually helps keep me warmer than I would be otherwise. If I get a little too warm, I just open the little vents and that cools be down really fast.


        Excellent Jacket

          Rode with this jacket today. 29 degrees, dark and wind at 10 mph at my back on way out and in my face on way back. 1 hour fifteen minutes. Castelli Airco long sleeve as a base layer then a midweight merino wool/poly mid layer then the jacket. Perfect the whole time. Not too hot and not too cold. Just right, kind of like Goldilocks. I am 6' 190 and wear the xl. enough room still for a thicker layer but not restrictive at all. A smaller size would be too tight unless that is what you like. I thought I might need the Stelvio that is windstopper all around but that would be too warm. THis jacket breathes well in the back and with the inner layers as discussed warmth is perfect and I did not overheat. Have also used this in the 50's with just a single layer and the vents open with no problem. This is a good deal at the price offered.

          Avg. ride time: 5h 37m per week
          • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

          great fit and warm

            I used this jacket today 40 degrees and wind out of the north wore a long sleeve under armour shirt as a base The wind stopper works like a charm and the back being a breathable material allows you to stay somewhat cool. The zippered vents on the front really help let air in to help cool once you start getting hot. As for fit. I am 6'0 and 155lbs, chest is a 38 and I wear a medium in this jacket. It fits snug the way it should, but not super tight. I would be able to wear several base layers w/o a problem with comfort.