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Castelli Gabba 2 Jersey - Short-Sleeve - Men's

Sale $116.97 $179.95 35% off

Item # CST002K

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Item # CST002K

Pro-level protection that accompanies you everywhere.

The effects of the transitional seasons are felt by cyclists from all walks of life. Whether you're a 'cross racer, a criterium sprinter, a singletrack enthusiast, or a professional, you've no doubt had the regrettable experience of being caught unprepared in the volatile elements or rapidly changing temperatures of late fall or early spring. The pro racer Gabriel Rasch came up with the idea of a jersey that could be paired with Castelli's Nanoflex Arm Warmers, so Castelli called the product Gabba, which is Rasch's nickname. It only makes sense that the second generation would be called the Gabba 2 Jersey.

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 it's not limited to Castelli. 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 US men's wear in the 1990s.

The Nano Flex underarm inserts offer increased stretch and ventilation. 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.

Castelli recommends the Gabba 2 for use in temperatures ranging from 50 to 64 degrees Fahrenheit. Its peloton-worthy cut, insulating characteristics, and low claimed weight recommend it for hard efforts like interval training and racing into the high-40s. To go lower, just add arm warmers. Recreational cyclists or riders building low-intensity base miles will find that this jersey works comfortably into the mid or even high-60s.

The Castelli Gabba 2 Jersey - Short Sleeve - Men's is available in six sizes ranging from Small to XXX-Large in the colors Black, Drive Blue, and Yellow Fluo.

  • Windstopper X-Lite fabric
  • Three rear pockets
  • Full-length zipper
  • Silicone waistband gripper
  • Reflective accents

Tech Specs

[body] Windstopper X-Lite, [underarms] Nano Flex
fall, winter, spring
Windproof Rating:
<1.0 cfm
3 rear
Recommended Use:
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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My best winter Jersey

  • Fit: Runs small
  • Size Bought: Large

This is my second pair of Gabba 2 Jersey. I wear this from Temp 40-30 deg F . I just change different underlayer.


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

HATE to return it! Beautifully made, handsome design, in perfect Surf Blue- but very tight up under arms and across chest- MED is too small for 155# broad-shouldered male, but the LRG might have a comically long tail.
This is more of a jacket for colder weather rides.
Buy the MED if you're 5'6" to 5'10" and pretty skinny.

A litle bit unconfortable

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

The fabric is a litle bit stiff and rash my neck, but is an intersting tool to ride at wet enviroments. I advice size up

Great kit

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

While it sure does fit snug, it also feels like like armor against cool weather. It has a very solid construction, and the windstopper keeps out the cold. Thankfully, the sleeves are a bit longer, so it's easy to pair with arm warmers without that annoying gap at your triceps. I'd take this over a jersey+vest combination any day.

Avg. ride time: 33m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Loves variable temps

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

I have only had this for a few weeks, but here in Oregon we have still had some cold/cool mornings. Rode it in 42 degrees with arm warmers and base layer and it was great. I have also used it a few rides in the low 50s and again it performed well. Great fit, no flap, the pockets are a bit small, my only minor issue, but all in all a great all rounder piece for people who ride in a variety of conditions. Size up!

Avg. ride time: 9m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Best money I've spent cycling!

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

All the 5 star reviews this jersey racks up are well deserved. Not much I can say that hasn't been said already. I've lived in this jersey this winter. its as warm if not warmer than my Mortirolo 3 jacket.

Absolutely amazing jersey/jacket

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

I can't speak highly enough of this piece of kit. It's an extremely comfortable jersey, not just because of fit, but for how well it insulates against the cold. I've worn this in the 50s by itself and it's perfectly comfortable, even in gusty and cold winds.

Thing is, though, it's equally comfortable in lower temps as well. I am extremely comfortable -- warm even -- into the low 40s, wearing nanoflex bib shorts, arm warmers, a craft windstopper baselayer, and this jersey.

I don't know that I'd deliberately wear this jersey if the temps were starting in the 30s (mainly cuz I have a longsleeve, heavier, gabba jersey for colder temps), but I have ridden with this jersey when the temps started in the 40s and later dropped into the mid-30s: perfectly comfortable. It does a great job trapping in my body heat to keep me comfy, but does not overheat. I have found with other combinations of apparel for the lower temps, I am able to stay warm, but I sweat like a horse. Not with this thing. I'm comfy, warm and dry in temps ranging from the 30s to 50s. Haven't tried it yet into the 60s, but I am confident that if it's "chilly 60s" this thing would be amazing.

Versatile, comfortable, effective. I can't say enough about this piece.

The pockets in the back are little narrow. If I could have my way, I'd like to see them a little bigger. Also, caveat emptor, this piece is tight fitting. If you have a roll around your center, you're not gonna hide it with the gabba 2. It won't hold anything back!

Love, love, love this jersey.

Why the name Gabba?

    In August 2009, Castelli held a series of meetings with Cervélo TestTeam riders to determine their desires and what improvements could be made in the performance of their cycling kit. One (soon to be famous) item they developed out of that collaboraton was an improved short-sleeve jersey to use with arm-warmers for training and racing during the shoulder seasons (late Winter/early Spring) in northern Europe, Belgium, etc.

    Cervélo rider Gabriel Rasch (nickname "Gabba"), '03 National Road Champion of Norway, asked for something that did not exist at that time. A short sleeve jersey that: (a) provided thermal protection for use in cool/cold weather; (b) a textile that did not flap in the wind and slow the riders down; (c) a jersey that provided excellent fog/mist/drizzle protection; AND... (d) a textile that actually, functionally vented sweat (so no sauna syndrome).

    Castelli got to work with textile partner W.L. Gore to develop a fabric stretchy, breathable, and water-resistant enough to satisfy the needs of Gabriel Rasch, Cervélo, and the rest of the pro peloton. The result is history.

    The "Gabba" became such a pro favorite that even riders not sponsored by Castelli would personally buy Gabba jerseys, remove the lables, to train and race in.

    The Gabba short-sleeve jersey is designed to match with Castelli'sNano Flex+ arm-warmers. Start your cold morning ride with the arm-warmers on, remove them later if/when the sun peaks out.

    I wear the Gabba with a light or midweight polypro vest baselayer. (The Castelli Flanders is great or similar by Santini, Giordana, or Assos).

    Sizing: Size up +1 from your usual street size, per usual with Castelli.

    **Caveat: The Gabba is part of Castelli's Rosso Corsa (race) line. This jersery is tailored VERY slim for fit/athletic riders.

    Wind Stopper and Breathes Great!

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

    I've worn this jersey up to 50 degrees but any warmer and you'll sweat a bit. I've used it at 36 degrees with arm warmers and up to 50 degrees (both with no base layer) and been super happy. It breathes great, stops the wind in its tracks, and prevents over-heating unlike some jackets. I'm absolutely satisfied with this jersey and I've actually used it more like a jacket which is amazing. The only complaint if I had to would be that the neck is a little tight if you zip the last 3" and the back pockets could be a little easier to get into. Usually if you have this jersey on you're wearing gloves. Castelli runs small so buy one size up if you're in the USA.

    Extend Your Riding Season

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

    This is a great jersey to either extend your riding season or to give you the confidence to start riding earlier in the season. I use this jersey between the temps of 45-60 F and will always wear a base layer underneath it. When its on the colder side, I'll bring my arm warmers and wear a heavier a base layer. I haven't wanted to ride in weather less than 40 :\
    This jersey runs definitely on the small side. I decided on the large over the XL because the XL was too long for my short torso and I wanted something that was more form fitting through the torso.
    I like how there aren't a ton of large logo's on the jersey and it looks more classy than a sponsorship piece. I got the black jersey and the reflective strips on the back of the jersey are a nice feature especially when riding in low light conditions. You'll appreciate how long and water resistant the back of the jersey is when you continually ride through water run off from melting snow.

    Avg. ride time: 1h 56m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Great Jersey...No Complaints

    • Familiarity: I've used it several times

    This jersey fits great, looks great, and handles moisture and heat like a champ. I like that Castelli offers their top-shelf stuff in a low key design and it doesn't say CASTELLI all over it. I also like the longer sleeves that really work well with warmers and the pockets that are easily accessible. I'd wear this thing to dinner if I could and I just might :)

    Avg. ride time: 5h 14m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    OMG Awesome

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

    This jersey simply rocks. For transition weather like we have here in UT during the spring and fall this jersey is perfect. The wind protection keeps the core warm and the fabric sheds moisture quickly. Yes, it's pricey but this is the finest technical jersey I have ever tried. Other brands I frequently purchase are Rapha and Giordanna.

    Like all of Castelli's clothing this is cut for thin, racer body types but this is particularly form fitting. I'm a bit more muscular and the large fits perfectly snug (5'8" 160lbs). No flap in the wind, absolutely perfect comfortable fit.

    I use this with a base layer around 50-60 degrees. Then layer this under a heavier, insulating winter jacket for rides under 35 degrees so it gets a bunch of use and is very versatile. The long sleeve version would likely rock the in-between temps (i.e. 35-45 degree range).

    All around the best Castelli product I've purchased in a long long time. Get it.