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Castelli Gabba 2 Convertible Jacket

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Item # CST002L

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Item # CST002L

Functional simplicity with a twist

Italy's signature recipes often thrive on simplicity punctuated with one, stand-out element that defines the dish. Case in point is the Venetian classic linguini with clams, which uses a simple aglio e olio as an unassuming platform for succulent bivalves that reshape the overall flavor profile of the dish. Though the company is based in Milan, not Venice, Castelli designed the Gabba 2 Convertible Jacket according to this Italian maxim of simplicity with a key element of distinction. The Gabba 2 Jacket provides all of the inclement-weather utility of the Gabba 2 Long Sleeve Jersey but with the flexibility of one additional element that redefines the item: removable sleeves.

The benefits of this feature are immediately obvious, but we'll digress briefly to explore them before detailing the jacket's construction and fit. Removing the sleeves makes this jacket wear comfortably in temperatures ranging from 43 to 64 degrees Fahrenheit. The sleeves, courtesy their lightweight Windstopper X-Lite construction, stow easily in one of the rear pockets. This is a lovely feature, but we do recognize that it's nothing new — cycling jackets have featured innovations like this for some time. Castelli sets the Gabba 2 apart by extending the zippered sleeve over the shoulder in a raglan cut, keeping the zipper off of your skin and providing almost a foot of overlap with the short sleeves of the jersey for increased protection.

The Gabba 2 embodies Castelli's ethos of minimalism in construction by using as few fabrics and seams as possible. With the exception of the stretchy Nano Flex inserts in the underarms, the entire jersey is made from Windstopper X-Lite fabric. Windstopper X-Lite has 1.4 billion impossibly small pores per square-inch that guard your microclimate jealously. They don't let wind in, but they do let moisture and water vapor out. This isn't just based on vague marketing copy, though. The science behind Windstopper X-Lite is measurable in a rating called CFM, which stands for cubic feet per minute, used to measure the volume of air that passes through a fabric in, you guessed it, one minute. In order to be considered truly 'windproof,' a fabric must register a CFM of equal to or less than 1.0. The Windstopper X-Lite fabric actually beats this rating, so you're guaranteed a top that is literally classifiable as windproof. It's also treated with a water-repellant finish, so it keeps the warmth in and the rain out while wicking moisture from your skin.

Gore-Tex's Windstopper is amazing stuff, but as with the removable sleeves, it's not limited to Castelli alone. The new Gabba 2 had to stand out in some other way. Castelli was birthed by the work of Vittore Giani, a tailor from Milan, so it plays to the strengths of its legacy: sexy aesthetics and uncompromising fit. The fit truly defines the jersey, but it's worth noting how Castelli's artful minimalism informs the Gabba 2's looks, too. The jersey is primarily one color, but the barest hints of Castelli's signature red and a tastefully-sized scorpion logo on the upper sleeves and center pocket provide highlights for all three variations. Even the cyclists here at Competitive who typically eschew form for function admit that attractive details like the contrasting collar lining actually help motivate them to get out for those cold-weather, base-building rides.

Castelli paid equal attention to the jersey's cut. The sleeves are forward-oriented and the chest features an abbreviated fit compared to similar offerings from other manufacturers. This makes the Gabba 2 feel a little tight across the chest while you're standing, but your body fills it out perfectly while stretched out on the bike. It sits close to your chest and stomach instead of hanging down, eliminating the pregnant hippo look that so many of us despise in kit designed for cold or inclement weather, and the more forgiving stretch of Windstopper X-Lite means that it moves with you rather than restricting you. The Gabba 2 is to traditional winter garb as the burgeoning trend of short bodied, double vent suit jackets with high, round armholes are to the boxy tents that passed for U.S. men's wear in the 1990s.

The Nano Flex underarm inserts offer increased stretch and ventilation, which can be further supplemented by unzipping the sleeves. The collar is articulated to eliminate looseness while you're in the saddle, the front zipper overlaps for an additional seal, and the hem has a silicone gripper element that ensures the jersey won't ride up. The lower back includes three pockets with mesh drains and two horizontal strips of reflective trim to help keep you visible to motorists on the overcast, drizzly days when you'll really appreciate the Gabba 2's weather-resistant qualities. Its peloton-worthy cut, insulating characteristics, and low claimed weight recommend it for hard efforts like interval training and racing into the low-40s. Recreational cyclists or riders building low-intensity base miles will find that this jersey, when sleeveless, works comfortably into the mid or even high-60s.

The Castelli Gabba 2 Convertible Jacket is available in six sizes ranging from Small to XXX-Large in the colors Black and Drive Blue.

  • Water-repellent and wind-blocking Windstopper X-Lite Plus fabric
  • Removable raglan sleeves
  • Storm-flap construction at back hem
  • Silicone gripper at waistband
  • Full-length zipper
  • Three rear pockets
  • Rear reflective accents

Tech Specs

Windstopper X-Lite
fall, winter, spring
Windproof Rating:
<1.0 cfm
3 rear
Recommended Use:
cold-weather cycling
Manufacturer Warranty:
1 year

Size chart


Men's Apparel
Chest 36.2in
Waist 31.5in
Hip 37in
Inseam 31.9in
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

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Avg. ride time: 8h 52m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Best piece of Kit I own.

  • Familiarity: I've used it several times
  • Fit: Runs small

Kudos to the Ladies and Gentlemen at Castelli for creating a garment that performs exceptionally well in various temperature ranges, and weather conditions. At this point I have worn the Gabba 2 convertible in temps ranging from 40-70 degree's, and when I return home from a ride I can’t stop telling my wife how amazed I was at how this jersey performed. I was born and raised in Northern Cali, and what I consider cold or cool will make those of you in the North giggle a bit. But for those of you who enjoy being comfortable on 4+ hour rides, when you start before sunrise, and then it begins to heat up at the end of the ride, the Gabba 2 jersey is an excellent choice. At 40 degrees, I wear the Castelli Flanders, short sleeve, and sometimes long sleeve base layer under the Gabba with the sleeves attached. At 50-55 degree's, I either wear a summer base layer or nothing underneath, and the Castelli Nano arm warmers. This all depends on what tempo I am riding at. If I am wearing a summer base and pushing hard, I tend to warm up pretty quickly. It’s very easy to regulate your temp by simply unzipping the Gabba at the neck which allows air to flow through. If I begin to get chilled, I simply zip the collar all the way up and I’m good to go. I have begun rides early in the morning when foggy and cool, and ended the ride at 70 degrees. To my surprise I was actually quite comfortable even at this temperature. Today it was 55 degrees and raining pretty heavy throughout a 25 mile ride. Although I was wet inside and out, the Windstopper X-Lite fabric seemed to act almost like a wetsuit which kept my upper body warm and comfortable. My feet, well that’s another story. This by far is the most versatile piece of cycling kit I own, and I highly recommend it.

As far as fit goes, I have a medium upper body build, and the large fits perfect. When I say perfect, I like the jersey to have a race fit that won’t flap in the wind.

Wind stopping prowess. Unwieldy sleeves

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small

Road the Hincapie gran fondo today. 42 at the start, 15-20mph wind. Climbs, descents, flats. I was freezing standing around before the start, but when going all out on 42 degree weather and high winds I was hot. This thing stops wind.

Cons- the sleeves. I can see why they offer the non-convertible version. From now on. I'll probably just use it without the sleeves. You cannot zip off rh sleeves or put them on while riding. I need that flexibility for the ascent/descent starts. This thing plus solid arm warmers would better than the zippered option.

Runs small.

Felt a little abrasion on skin (I do wear it too tight). I did not have anything underneath.

Avg. ride time: 2h 29m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Super jacket

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Medium

Used the jacket on several different weather types and it performed excellently in all conditions. On the not so cold ride the sleeves are very easy to remove and just as easy to reinstall. Has a prefect fit.

Quite Impressed

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small

I live in Northern California, where the weather is nice most of the time. I committed to riding more this winter, and figured I needed a nice windproof jersey/jacket, but wanted something fitted and not too hot or bulky. This Gabba 2 really hit the mark.

Sizing - I am 5'11, 210 lbs, with a 43" inch chest, and the XXL fits me well, with a slight bit of room.

Performance - I have used this in winds up to 20 mph and intermittent rain, and it kept me warm and dry. Used it this morning in temps ranging in the 50s and 60s, with steady rain and wind, and it performed well. I used it in temperatures above the suggested range, and did not overheat. I did need to open the front zipper a bit at points to let out a bit of heat, but it breathes well overall.

Great garment overall, highly recommend it.


  • Familiarity: I've used it several times
  • Fit: Runs small

The zip off sleeves really make this jacket perfect for the summer fall transition. I wear this without a base layer at 10 degrees celsius and I'm good!

Bad Experience

    No on-road experience as of yet, so I can't weigh in on the jacket's performance.

    But I'd like to comment on my CC customer experience. It was awful. I received a used item. The jacket had dried/dead skin and water stains on it, but CC represented it as new. My order included the sales receipt from the original owner's sale, so I have the evidence to confirm I am not the first owner.

    I wrote to CC (four times) to ask them if this is common practice or seems reasonable and fair. Radio silence.

    I'm writing this review in the hope it gets more attention than my direct, non-public outreach did. But since I was asked to review the item...

    In my experience Costumer service here is top natch. Was your issue resolved???
    If not, simply return the item for refund...

    Feels nice, but too small for me in XL

    • Familiarity: I returned this product before using it
    • Fit: Runs small
    • Size Bought: XL

    I love Castelli gear. I own several pairs of their Aero Free Race shorts, which are awesome, and several various Castelli jerseys, all of which are size XL. I bought a Gabba 2, also in XL, but it was much too small. I'm 5'10 175-180 pounds, and this jacket was too short in the torso. If I stand up straight, it's about two inches above my shorts. Leaned over on the bike it wouldn't be a problem, but too short to keep.

    Hi Brian. I am the same height but 185 or so. What Castelli jerseys work for you? Specifically models and sizes. I was thinking about the Gabba 2 as well but saw your comment and now I am thinking twice about a XL. I have 32" waist and a 42" chest.

    Avg. ride time: 4h 46m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.


    • Familiarity: I've put it through the wringer
    • Fit: True to size

    I usually don't find jerseys that interesting. I just get one that looks nice, put a good base layer under it, and ride. I do tend to stick with Castelli, though, due to the way their apparel has saved my skin in a couple crashes.

    I picked up a Gabba 2 last November and it's been the single most versatile piece of cycling kit I've ever owned. I've worn it (with a wool base layer) in sub-zero temperatures fat biking and in 60 degree rain showers (with a mesh base layer) and everything in between. The Gabba just seems to disappear during the ride and when I get home, I've never regretted the choice to wear it instead of another piece of cycling kit.

    Of course Castelli sizing applies. It does run a little tighter than my Free Aero jerseys of the same size from Castelli, but I like that a lot. I consider it my best-fitting jersey.

    Just what I needed

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: Runs small
    • Size Bought: Large

    I ride on the hills of Medellin, Colombia (6500 to 9200 feet over sea level) and during my rides I encounter temperatures ranging from the low 40s in the early morning to the 80s or more in the afternoon. So for afternoon rides the jacket is pretty hot but since I ride mostly in the morning or at night it is perfect. I use it with a Castelli Mesh Seamless base layer. By the middle of the morning I take off the sleeves (since I have short arms it is sometimes a little cumbersome) and if the ride takes me into the early afternoon I can always open it and finish mi ride. Versatile enough for most of my high altitude rides.

    Great review Pablo. I have no doubt you will be putting this Gabba 2 Jacket to good use!


    • Fit: Runs small

    Thrilled that I bought the Gabba 2. Should be just about perfect for the mountains here in Colorado. Thanks to everyone who has written a review, I ordered the XXL and it fits perfectly. I am 6'0", 195 lbs. June 2 update: I have now used the Gabba 2 on several rides. I wear it on its own between 40-65 degrees. I've only removed the sleeves once. Happy with the fit and performance.

    Versatile Jersey

    • Familiarity: I've used it several times
    • Fit: Runs small

    I have now worn the Gabba2 at various temperatures and have been impressed with its versatility. Without a base layer it remains comfortable on rides that start in high 40s and finish in the mid 60s.

    Like most Castelli jackets and jerseys it runs very small. XL was just a little tight. 2XL is just a bit large.

    What's your height and weight? That would help with your review on size. Thanks

    Gabba convertible jacket.

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: large

    Fantastic jacket, with a medium base layer, very comfortable with a wind chill of 32. In warmer weather, high 50's, great without the sleeves. a well made product!

    I Like It

    • Familiarity: I've used it several times
    • Fit: True to size

    I've used it on a couple rides with the long sleeves when the weather was dry and in the 40-50s. I've also worn it once without the long sleeves when the weather was in the low 60s and dry.
    I like it. It's pocket openings are a little higher up than my jerseys so I have to reach a little farther for food but it's okay. The sleeves are ever-so-slightly long on me but no part of this jacket flaps in the wind at speed. It gets slightly cool on my upper chest as a bit of air leaks in at the zipper. This is while wearing a base layer and jersey under it. It's zipper is easy to use one-handed to regulate temperature. l'm giving it 5-stars but hoping the material will hold up well to the washing machine.

    Avg. ride time: 5h 50m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Holy Wow! This thing rocks.

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: Runs small
    • Size Bought: XL

    I just used the Gabba 2 convertible jacket for 3 hours in constant rain. I am really impressed. The phrase "You get what you pay for" really applies to this piece of clothing. I had a shortsleeve thermal base layer on because the weather was supposed to be in the 40s, and I actually was a little bit warm and had to unzip the top a few inches. I think I would have been ok with nothing, or maybe just a summer base layer.

    After the ride I just walked right into the house and the jacket looked nearly as good as it did when I put in on 3 hours earlier. I am a believer in this piece of clothing.

    It is "aero" so I was worried about the XL as that the size I would normally order, but in all honesty it works. I might have a bit more room in the chest area if I ordered a XXL, but once you start riding and lean forward everything just fits.

    Holy Wow!  This thing rocks.

    Did you base your sizing off the chart? I'm an XL in the 2014 free aero bib and wear a 42 tall blazer, so I'm leaning toward the XL Gabba as well (assuming it will be form fitting)--is that about right?

    I actually did it solely based off of the sizing recommended by Shae in customer service. It fits about the same ... maybe even a tad bit looser than the XL aero race 5.0 jersey I have if that is a jersey you've worn.

    Unanswered Question

    Has anyone used this jacket with a backpack on the back? Will the jacket survive that or will it "scuff" the surface and destroy the water resistance?

    Avg. ride time: 10h 5m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    So Rad, need a convertible Womens though

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Medium

    I've had a convertable gabba for a year. use it almost all year round: short sleeve in fall/spring and full sleeve in winter. A super jacket that is great on wet days as well as cold and dry days. I am 6' 2" 162lbs and the men's medium is pretty darn perfect. I bought one for my girlfriend, it was a big debate, get the women's cut and not have the convertible option or go convertible and settle for men's sizes. Convertible won, but the men's small is a little too big for her. The should make a men's XS or a women's in convertible.

    Terrific jacket!

    • Familiarity: I've used it several times
    • Fit: Runs small
    • Size Bought: XXL

    This jacket does everything that's advertised. The WindStopper technology is outstanding at blocking the cold wind. I've used it without a base layer at 45 degrees and it kept me warm. When the temperature warmed up to 65 it was not hot or even warm. At 70 degrees I removed the sleeves and road comfortably for several hours. The rear pockets are very generous and useful. This is my favorite jacket. It is outstandingly versatile. It is sized small so I'd recommend getting one size larger than you normally wear.

    Avg. ride time: 5h 50m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Can't take arms off

    • Familiarity: I've used it several times
    • Fit: Runs small

    The jacket is very nice, however, it is not quite convertible: I could not take the arms off of the jacket while riding the bike. To take off the arms you need to stop and use two hands. To put the arms back on you need to take the jacket off and then put the arms back on. To me it makes more sense to get the short sleeve top and the arm warmers.

    I'm 5'8" 180-185 lbs and the xl fit fine.