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CastelliPremio Black Bibshort - Men's


Item # CSTZ7H4

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  • Black, 3XL ($299.95)
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Item # CSTZ7H4

Why We Like The Premio Black Bibshort

Graduating from a pair of traditional athletic shorts to a supportive bike short is a noteworthy step for many up-and-coming cyclists. To do so means you're willing to sacrifice casual style in the name of comfort as you don tight fabrics in public for the sake of more support. Once you grow accustomed to a reliable bike short, you'll begin to explore the foreign world of bibshorts as you push your abilities on the bike to new levels. When the day comes to upgrade your kit once again, look to the Castelli Premio Black Bibshort for unrivaled comfort and support in the saddle.

Its nearly seamless construction promotes a sleek fit while reducing the likelihood of chafing and abrasion, so you can stay on the bike for extended periods of time. When you learn to ride in aerodynamic positions, the bib profile prevents your lower back from being exposed to the wind, promoting a fit that's locked in place. As was the case with your cycling shorts, the Premio Black features a built-in Progetto X2 Air Seamless chamois to handle sitting duties, absorbing shock to your sensitive bits even when the roads feel more like a never-ending pothole. To keep you cool on warm summer rides, a mesh back is paired with bonded bib straps, delivering enhanced airflow for moisture-wicking comfort.

  • A versatile bibshort delivers superior comfort and performance
  • Forza fabric stretches and moves with your body on the bike
  • Lumbar support band keeps fabric locked in place around the waist
  • Mesh back and bonded bib straps provide enhanced airflow
  • Progetto X2 Air Seamless pad absorbs shocks and bumps
  • Vertical silicone grippers maintain a proper fit
  • Ideal for temperatures from 59° - 89°

Tech Specs
MaterialForza fabric
Seasonspring, summer, fall
ChamoisProgetto X2 Air
Bibmesh back with bonded 2-layer straps
Leg Grippervertical silicone
Manufacturer Warranty1 year
Activityroad cycling, gravel


Men's Apparel




















































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.

What do you think about this product?



So I bought both a M and S. I'm 5'10" and weight 147lbs. The size small obviously feels tight but I think the shorts part fits me just right. My concern is with the shoulder straps. Just how tight should they feel? The size small straps feel pretty stretched and pull. The Medium doesn't have that problem but fear the shorts may shift around. For ref I can wear a Small Curore bib, and own a pair of M Pearl Izumi PRO bibs which after riding in for a summer feel too loose.

>Rating: 5

I love the fit and feel of these bibs.

I've used it several times
Runs small
Size Bought
6` 1"
183 lbs

I've had many different bibshorts over the years, including from brands like Pearl Izumi, Castelli, Giordana, Assos, Descente (remember them?), Mavic, etc. I've been an Assos adherent since the orange EI inserts. Unfortunately, I don't think Assos has met those lofty heights since them. Don't get me wrong, they're still good -- and I currently have a pair of the Equipe RS S9 as well as the Cento Evo -- but I feel that the days of Assos being head and shoulders over the rest may be gone. Conversely, I was always just a bit disappointed with Castelli. The original bodypaint bibs were ok, but fell apart relatively quickly. A prior version of the Free Aero was comically small and tight in the legs. And the sizing was all over the place, apparently depending on whatever factory Castelli had decided it would subcontract its wares to for that particular item. I currently have a pair of Free Aero 4, and while some things are very good (overall fit, compression, leg grippers, quality of the short materials) others leave me underwhelmed (bib straps, apparent durability of chamois). These Premio bibs, however, tick all the boxes so far. The fit is fantastic -- snug, compressive, comfortable. The woven material feels great against the skin and appears to draw moisture (ahem, sweat) from the skin to the surface of the bibs. The straps are comfortable and lay flat (and seem to be the right size for the bibs!). The leg grippers are fantastic -- pretty much invisible from the outside, grippier than most grippers on any bibs I've tried, barring the current Free Aero 4 -- and don't pinch your legs at all. The laser-etched graphics look great, subtle and should be durable. The chamois is a version of the same Progetto X2 Air as in the Free Aero 4. But(!) Castelli seems to have addressed one of my concerns with the version in the Free Aero 4, by stitching it to the shorts all the way around in the Premio. (The Free Aero 4 was open at the "V" notch cutout in the back of the chamois -- in my experience, the exposed foam and padding would delaminate, starting from that opening. Hopefully, stitching the pad all the way around will increase durability.) I do note that the chamois in these Premio bibs seems a bit firmer and stiffer than in the Free Aero, so maybe there are other changes as well. I find the chamois quite good, but a bit stiff feeling, and it could really use a bit more front coverage, like the Assos chamois. Overall, these have become the first bibs I grab for longer, or special rides. UPDATE -- So, I wore these shorts for a century about a month ago (remember, these are my go-to for longer, or special rides). About 25 miles in, I crashed, going about 18-19mph, according to my Strava data. I hit the asphalt on my left side, with pretty big bruising and road rash on my knee, shoulder, and hip. My Q36.5 jersey got a big hole in the shoulder; my Assos glove got a big hole in the palm; even my Sidi shoes got scratched up some on the left Tecno buckle and upper/sole interface. Amazingly, despite big bruising and road rash on my hip, these shorts remained completely intact. The only sign of the crash is the fabric has just the faintest abrasion lightening on my left hip. While I hope not to have to test it again (knock on wood), it seems the woven lycra fabric Castelli uses is quite durable.

>Rating: 5

A really good short - not sure on value

I've used it once or twice and have initial impressions
True to size
Size Bought
5` 8"
158 lbs

So this is a really good bibshort. Probably the best I have. Compression is on point, cut is good, and the chamois is also very comfortable. The look is understated and will go with every jersey. The straps initially seem a bit short (and tight), but I didn't really notice them once I was on the bike. Heat management seems moderate. They weren't especially cool or breathable. Not bad, just not "next level" good. Overall, they're great, but there's nothing so amazing about them that they're worth $100 more than my next nicest pair of bibs. Or at least not yet. Two hours is my longest ride in them so far, so maybe they'll shine with more time in the saddle. I was a little concerned with Castelli sizing, but medium is a great fit for me (I usually wear medium in most brands). Update - 5 hours on gravel and they were great.

Super light fabric and high quality feel, but they run extremely small…comically small really. I’m 6’0 155lbs and with pedal mafia, rapha, maap etc., a small is typically perfect. The small was nice and snug on the legs and hips, but the straps were literally half the length of my torso. Even though the elastic is very supple and could stretch over my shoulders, they were way too tight to wear for more than a minute or two; even tucked into an aero ride position. I would recommend sizing up one or two sizes.