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Castelli Evoluzione Bib Short - Men's


Item # CST000H

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Item # CST000H

Shorts for training, racing, and everything in between.

Castelli’s Evoluzione Bib Shorts challenged our notions of what a sub-$100 pair of bibs could be. By including its famed KISS3 chamois, and the ultra-wicking ProDry2Strati fabric, Castelli pretty much had this one won before anyone else had their lead-outs sorted.

Not content to stop at fabrics and chamois, though, the Evoluzione is also cut from 8 different panels of fabric to ensure a precise fit. These panels are then sewn together with a dual-needle stitch for durability. Castelli finishes off the job with molded-in silicone leg grippers to keep the shorts in place and comfortable.

  • KISS3 chamois
  • Moisture wicking fabric
  • Silicone grippers

Tech Specs

ProDry 2Strati
spring, summer, fall
form fit
yes, mesh
Leg Gripper:
InMold silicone
Actual Weight:
Black/Drive Blue, L: 165g
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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Poor bib strap stitching

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

I have 2 pairs of these. On both pair, the stiching on the mesh bib straps is coming out after a month of use. I wash them on delicate and hang dry them. Very dissappointing.

Nice bibs for the price

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: Large

I ordered the large in the black/yellow fluo colorway, and really like the bibs so far.

I'm 5'7", 175lb with a 33-inch waist and am "all about that bass," and the L gives me a supportive, compression fit without feeling uncomfortably tight.

I really like the chamois. It's the most comfortable I've used, although my main point of comparison is entry-level Pearl Izumi.

I haven't had it long enough to speak to the durability, but I don't see any obvious flaws in construction. Assuming it holds up okay, I will likely buy another pair or two.

Worst quality Castelli I have bought.

  • Familiarity: I've used it several times

I needed a new pair of bib shorts and have used Castelli (the more expensive ones) in the past but these are pretty low quality and I wont buy them again.

The leg gripper stitching has come undone after only 5 rides, around 300 miles, the over the shoulder straps on the one side have started coming undone as well.

Very poor quality for the price, not recommended.

Major Mammal Toe!!!

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

Runs way small. Tried the XL first, wasn't comfortable, and had major mammal toe (male camel toe). Exchanged for XXL, and the mammal toe was still pronounced. Tried on my Capo bib shorts, size XL, and no mammal toe. Not sure if it's a Castelli thing... but I won't be buying bibs online without trying on first in the future... OR maybe it's just a sign not to buy the cheapest item you can find...

Slim fit -- good with a cutout saddle

  • Fit: Runs small
  • Size Bought: XL

The first impression was...THESE THINGS ARE TIGHT!

That was in the first week of January coming off of six weeks of rich food and zero regard for nutrition and training.

I have worn them with two different saddles and I will say the saddle with the cutout/valley section works much better with the Kiss3 pad system.

i wash all of my cycling clothes on the delicate cycle and never put them in the dryer. I see no issues with durability/construction quality.

Definitely worth a look at this price!

"They're Awesome"

  • Familiarity: I gave it as a gift but have feedback to share
  • Fit: Runs small

Purchased these as a gift, his first pair of bibs and he digs them. Make sure you measure out the torso length, you may be need size up, Castelli usually runs a bit small. Purchased a Medium and returned for a Large, he's 6' 160 and short in the torso.

Avg. ride time: 10h 6m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Not comfortable and easily ripped

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

I'm 5'11" and 170lbs. I usually wear L for Castelli product. Ordered this one size L, so far so good. First ride, the seam on the strap ripped. First ride! Subsequent wears caused uncomfortable numbness in the groin area during long rides. Definitely not recommended. I can only use this bib short now for short training ride.

Good for the price.

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

Very good for the price, I'm well satisfied with this product. I use it for long runs and is well comfortable.

Rafael, can I ask you jean waist size? Thank you!


  • Fit: Runs small

Castelli designed these to be affordable yet do their job. As long as you understand Castelli sizing, and get the correct size for you, these are very effective summer bib shorts.

The design here is very simple and straightforward. These are not made of 8 different kinds of exotic textile. And they are not "flashy." But they are designed very well. The "ProDry 2 Strati" lycra fabric used in the panels is a little light (not compressive in any way) but works just fine. This weight is perfect for summer use. The bib straps and entire back is white mesh to ventilate sweat and heat, and so not to clash with see through, light colored Summer jerseys (nice). And the "kiss" chamois is super soft, comfy, and works great (also a pleasant surprise).

All in all, the Castelli Evoluzione bib shorts look great, work great, and are a great value.

Lastly, the styling is really well done here. More subtle than a lot of Castelli kit.

Sizing: Italian sizing -is- different. Size up +1 with Castelli. Always. I'm 5'10 and 185. The XL fit well (snug).

Avg. ride time: 3h 51m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

High hopes

  • Familiarity: I've used it several times

Like several others have mentioned, these run a bit small/tight but I came to appreciate that about them and these quickly became my go-o bib. That is, until the gripper elastic around one of the legs became "unglued" (it doesn't appear to be sewn) from the cuff material. This was only after two months of use. I realize these aren't top shelf bibs but I followed the care instructions and didn't otherwise abuse them so I would expect more than 2 months of use out of them.

Agree completely. They run a little small and the elastic at the leg opening comes off easily.

Had the same issue with the elastic at the leg opening

What size I am

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

I bought these in size medium as a crap shoot. I'm one of those people that typically wear a size in the middle of a medium and large. 5'11" and 160lbs. When I pulled them out of the package, I was thinking "oh crud, I should've got the large", but when I tried them on on, I was very happy with the fit. They fit. FWIW: I like my cycling kits to be race tight.

Excellent 1st bib.

  • Familiarity: I've put it through the wringer

These bib shorts were the beginning of me allowing myself to invest in a hobby, and I really appreciate them for that. For the money I spent on them, they helped me so much in my progression as a cyclist. I only wish I'd not been hospitalized from being hit by a car while wearing them, and getting them subsequently destroyed, otherwise I'd still be wearing them!

If you're looking for a great quality bib that has a simple aesthetic at an easily-digested price, then I highly recommend these.

All the best in recovery time, Welcome to the Sport of Cycling, I've crash, had spills, ripped garments, damaged gear, wheels etc & came right back on the 2 wheel hi-horse, its a 40+yr love affair with the Sport.

Bobby Bling

great bibs

  • Familiarity: I've used it several times

these bibs do run a little on the small side, and are tighter around the thighs. but i do like the tighter fitting ones. the pad feels really good, and after a long ride it still feels great, and you can handle more.

Horrible Bibs

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

Sizing is very small. I fit right in the middle if their large category on the chart, ordered a large, and have to fight to get them on. Very uncomfortable once they're on also. Cheap material. I'm going back to Pearl Izumis. These suck!

With Castelli its normally wise to size up. I am sure competitive will help you with that they have always been great in the past

Avg. ride time: 9h 35m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Not bad, not great.

  • Familiarity: I've put it through the wringer

I don't want to say they're terrible because I'm keeping them, but I've been a little disappointed. They feel great when you put them on and, for most rides, feel pretty good the entire time. But on some rides, my inner right thigh gets irritated/itchy from something near the edge of the chamois. I can't figure out what it is. I'm going to put some bodyglide or chamois cream on it and see it that helps.

The chamois is better than my what I have in my other, cheaper bibs. This one feels much less like a diaper, so that's an improvement. It does seem like they could have put just a little more padding under the sit bones and less in the middle, which pushes against the soft tissue. It took me a couple rides before my butt was used to them - kind of like the first time riding after a 2-3 month break.

I haven't had any issue so far with the logo cracking/peeling like others mentioned. I've probably washed them 15-20 times so far. Gentle cycle, cold, low spin, then hang dry is my procedure.

I'm 6', 155-160lbs, 31 inch waist, relatively thin thighs (not a sprinter) and ordered a size Large. The fit is good. The straps are a little short/tight as they go over my shoulders but don't hurt. The fit and compression everywhere else is about perfect.

Tight fit, great bibs.

  • Familiarity: I've put it through the wringer

I agree with the "skinny jeans" comment but I've really grown to like these shorts.

The Kiss3 pad takes a little getting used to -- I did notice after a few washes the pad compresses in the areas complained about in other reviews.

I'm getting into longer rides with these bibs and I'm really enjoying them. Overall a great bib at a great price.

Worst bibs I have ever tried.

  • Familiarity: I've used it several times

I gave these a shot, hoping to save a few bucks and still get something usable. I returned them after 3 rides, and came to the conclusion these are the worst bibs I have ever tried. The fabric on the inside of my right leg had already worn so badly as to open a hole. But that isn't the reason I disliked them so much. The Kiss3 chamois is designed by sadists. It has extra padding exactly where you don't need it: in the middle, running below your oh-so-important nerve. Despite having a Body Geometry (Specialized) saddle open in the middle, the extra padding in these bibs was capable of filling the empty space and then push against me, pinching and causing pain. Kiss3 indeed: kiss your erections goodbye. The padding below your sit bones is insufficient, adding to an already painful experience.

I've had good experience with other chamois by Castelli, especially the X2 they use for more expensive bibs. My advice is to stay away from these. Among the cheaper bibs, my favorites (based on chamois and fabric) remain Giordana and Campagnolo (if you can still find them, since they cancelled their clothing line.)

I laughed so hard. I'll take your review closest to Heart. Thanks.