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Castelli Evoluzione Bib Short - Men's

Sale $62.96 $89.95 30% off

Item # CST000H

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  • Black, M ($62.96)
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Item # CST000H

The evolution of shorts

Just because you pay for your own bike and all your race entry fees doesn't mean that your nether region should be at the mercy of cheap, made for the masses cycling shorts. You should be wearing bibs, just like the pros. Castelli's Evoluzione Bib Shorts were inspired by the original Progetto Y Shorts and feature moisture wicking, 8-panel fit, and a Castelli proprietary chamois. They are an entry-level bib short with features usually reserved for apparel twice the price, and they are the perfect introduction to the joy of wearing bib shorts. 

The Evoluzione shorts use Castelli's ProDry2Strati fabric. This fabric features a two-layer construction which wicks moisture from your skin to the exterior of the shorts so that it quickly evaporates to keep you dry. As far as fit, gone are the days of the 4-paneled shorts with seams in all the wrong places. The Evoluzione shorts were sewn from 8 panels which were curved to conform to your body while you are in riding position. Attached to the shorts is a simple mesh bib. This mesh is lightweight and won't feel binding on your shoulders. It will wick moisture away from your skin so that you won't ride with wet stripes up your back and down your chest. Additionally, double needle stitching means that the shorts are durable so that you can put them through their paces. The leg openings feature in-mold silicone leg grippers which keep the shorts securely in place.

Castelli is known for its chamois. The Kiss3, which is used in the Evoluzione short, is no exception. This insert features a soft, brushed microfiber top which rests comfortably against your skin. This layer is seamlessly engineered so as to eliminate chafing and abrasion. Additionally, the insert has been designed with a flexible shape that moves with you. Dual density provides maximum thickness in the ischial zone and it tapers to moderate thickness in the perineal zone and minimum thickness at the perimeter. It was bacteriostatically treated so that saddle sores and friction are minimized.

The Castelli Evoluzione Bib Shorts are available in six sizes from Small to XXX-large and in the colors Black/red, Black/drive blue, Black/white, and Black.

  • KISS3 chamois
  • Moisture wicking fabric
  • Silicone grippers

Tech Specs

ProDry 2Strati
spring, summer, fall
form fit
yes, mesh
Leg Gripper:
InMold silicone
Claimed Weight:
[size L] 5.25 oz
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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Not My Favorite

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

These are great bibs for the price... With that being said, they're not all that great. The stitching on the straps seem to be of very poor quality, and I feel like I'm going to pull the straps apart trying to pull them on. If I want a tight "race fit," I go with a medium in Castelli. I wanted an everyday, comfortable bib this time, so I went with a Large. In somewhat true Castelli fashion, the straps still feel like they're pulling on my shoulders. This isn't a major issue since Castelli is known to fit small, but I figured they'd be a bit more comfortable by sizing up. I don't have anything poor to say about the chamois, and the legs feel fine. I'd say they're good for the money... but they're not great.


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

As other have said, poor stitching, fit and a thin chamois. Not very comfortable and certainly wouldn't wear for a ride more than 2 hours... Generally only wear for indoor training sessions. Would also says the straps don't hold their shape very well so they tend to roll up vs lay flat. Would not recommend.

Avg. ride time: 7h 57m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

You get what you pay for.

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

These are decent bibs for sub $100 but you should know up front that they will not wow you. The fit is not as forgiving or flattering as with more expensive bibs from Castelli, even though the chamois is still very good. It felt a little small compared to the other castelli bibs in my closet. As one guy mentioned, you are prone to the mamal--or moose knuckle--when you wear these bibs, as well as a tendency for it to ride up in the rear. They also do not breathe as well as a more expensive and better designed bib such as a velocissimo level piece of kit. That being said, on the bike they are comfortable--if still a little rough--and have proven more durable for me than for some of the other reviewers. washing on cold/gentle and air drying has gone a long way to preserving them. And for the price, I can have a couple in my riding rotation and save my good chamois for the long days. I tend to use this bib for commuting and sub 3 hour rides. With a quality chamois, the only thing limiting these bibs is the less breathable and less comfortable fabric of the shorts.

Avg. ride time: 20m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

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.

At least you got a chance to use them. The stitching on both shoulder straps was already coming off before I even opened the plastic bag! Sent it back for full refund as fast as I could. Where is the quality control???

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...

Sergio, you've never been a high level athlete for sure. They just absolutely DONT care about it. If you have to ride 200km you simply cannot have anything loose and I would even say ( I'm a woman and have been in cycling almost all my life) if a guy has nothing bulging than it would be a little humiliating, high level cyclists even proud of showing their size. And if they have to be pictured the coach would remind them to put their members neatly.

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: 2h 36m 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: 4h 16m 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