Like this site? Help us to make it better.


Castelli Premio Black Women’s Bib Shorts



Excellent all-weather shorts with minimal seams, fantastic performance and wonderful comfort
Exceptionally smooth and effective leg grippers
Thin yet robust material
Highly breathable
Great wind and shower defence
Comfortable pad
High price
No 'easy pee' feature

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

What the scores mean

Good scores are more common than bad, because fortunately good products are more common than bad.

  • Exceptional
  • Excellent
  • Very Good
  • Good
  • Quite good
  • Average
  • Not so good
  • Poor
  • Bad
  • Appalling

The Premio Black Women's Bib Shorts are Castelli's new top-end bibs, and their impressive attention to detail really makes the difference. The woven fabric is very thin and breathable yet robust, while tabs on the straps guarantee they lay comfortably flat the whole ride. Yes, they're expensive, but also an absolute delight to wear for all-out blasts and long rides alike.

I was a bit shocked when I first picked these shorts out of the box – they look tiny. I was really worried I'd ordered the wrong size. But having pulled them on, I was pleasantly surprised. There's an impressive amount of stretch, and the fabric reassuringly hugs your legs and hips with supportive compression – just the right amount.

> Find your nearest dealer here

The Premio Blacks are made from what Castelli calls a 'state-of-the-art engineered weave fabric'. It's said to be a thinner, denser and more durable fabric (than regular short fabrics, presumably) and extremely abrasion-resistant.

To aid comfort, Castelli use just three panels here, with a single seam that connects a large panel around each thigh. Round the back there's a smaller panel, and inside it is a lining to prevent transparency issues. The two-layer solution works, and doesn't feel bulky doing it, though it can create a little heat build up.

2021 Castelli Premio Women's Bib Shorts - back.jpg

The fabric is thicker around the hips, and also slightly more compressive, to keep the pad in place. It doesn't feel thicker, but everything is held perfectly in position, and it doesn't feel too tight either.

Most brands claim a second-skin effect, but these truly do provide a close, smooth feel that's almost invisibly comfortable.

2021 Castelli Premio Women's Bib Shorts - legs front.jpg

Breathability is impressive, as is the fast-drying nature of this fabric. Not only can it deal with the heat of sweatfest interval sessions, the tight weave also effectively blocks out the wind, while water beads brilliantly.

There's no bulk to the material at all, so it doesn't hold water even in prolonged rain. Basically, these cope with changeable summer conditions incredibly well.

Total leg ends

Down at the raw cut leg ends, there's 6cm of grip from a special weave that brings the Lycra, Castelli says, to the inner surface. There's no leg band – it's just a smooth transition from the single panel on each thigh.

This is an incredibly low-profile solution that doesn't squeeze in the slightest, yet keeps the shorts in place effectively. It's by far the most comfortable – and neatest – leg gripper I've ever worn.

2021 Castelli Premio Women's Bib Shorts - cuff logo.jpg

The straps are thin and very stretchy, and cut long enough to accommodate a wide range of upper body sizes. It's soft against the skin, so you can easily forgo a base layer.

2021 Castelli Premio Women's Bib Shorts - straps front.jpg

Inflexible tabs prevent this thin fabric from bunching up. These small rigid sections help you arrange the straps when you first put them on, and keep them sitting flat as you ride. I didn't notice them on the bike at all.

2021 Castelli Premio Women's Bib Shorts - strap detail.jpg

The straps join to a perforated rear panel, which provides plenty of ventilation. The 'no-sew' border here also helps with comfort, as the fabric stays the same thickness.

2021 Castelli Premio Women's Bib Shorts - straps back.jpg

There's no easy-pee comfort break system, which makes mid-ride toilet stops more hassle, though Castelli does non-bib, waisted versions of these shorts if that's a deal breaker (they're cheaper at £180, too).

On a Donna

The Progetto X2 Air Seamless Donna two-layer pad has a soft, stretchy upper 'Skin Care Layer' to move with the skin, paired with a medium-density 'Cushioning Layer' and 3mm gel pads for support under the sit bones and perineum.

2021 Castelli Premio Women's Bib Shorts - chamois.jpg

The fabric feels wonderfully smooth here, and I found ample cushioning for rides over six hours. It's a very comfortable chamois.

> 38 of the best cycling bib shorts — get comfy on longer rides

You may be thinking the incredibly thin fabric – Castelli call it 'papery' – might be on the fragile side. However, after the month-long testing period I've no reason to believe these won't last incredibly well. The fabric feels surprisingly robust and these still look as good as new. There are subtle logos, but no reflective detailing though.

2021 Castelli Premio Women's Bib Shorts - strap detail 2.jpg

These retail at £200 which is pricey, even for premium shorts. You can get some supremely comfortable and highly breathable bibs for around £160 – such as 7mesh's WK3 bib shorts (£160) and Velocio's Women's Ultralights (£168) – and both of those have very well-integrated comfort break designs, too.


These are exceptional performers for riding in all weathers and at all effort levels. The woven fabric is incredibly thin and breathable, yet feels robust and provides protection against wind and showers too.

The raw cut grippers are also the comfiest and neatest I've ever worn. Yes, the Premio Black bibs are expensive, but they really earn their keep as go-to shorts for all kinds of rides.


Excellent all-weather shorts with minimal seams, fantastic performance and wonderful comfort

If you're thinking of buying this product using a cashback deal why not use the Top Cashback page and get some top cashback while helping to support your favourite independent cycling website test report

Make and model: Castelli Premio Black Women's Bib Shorts

Size tested: Small

Tell us what the product is for

Castelli says: "The Premio Bibshort has been engineered to provide the ultimate in long-distance comfort and to be your favorite bibshort ever."

Tell us some more about the technical aspects of the product?

Castelli lists:

Gradient stretch woven fabric for the right support in the right place

Woven fabric weighs 30% less than comparable knit fabric

Perforated back bib panel with lie flat bib straps that don't bind at shoulders

Integrated gripper elastic at leg ending holds short in place without need for extra silicone grippers

Laser-etched logos with RossoCorsa at center back and black scorpion shadow logos at lower legs

Progetto X2 Air Seamless seat pad


Rate the product for quality of construction:

Very well made.

Rate the product for performance:
Rate the product for durability:

The ultra-thin fabric is not as delicate as it may seem. There's also no bobbling after wearing and washing.

Rate the product for fit:

Spot on. The straps can accommodate a wide range of upper body sizes, too.

Rate the product for sizing:
Rate the product for weight:

At 139g these aren't quite as light as Velocio's Ultralights (126g), but they're not far off!

Rate the product for comfort:

Comfort is outstanding.

Rate the product for value:

They're not cheap, but there's a lot of attention to detail. The quality, comfort and performance are worth it.

How easy is the product to care for? How did it respond to being washed?

All good when machine washed at 30°C.

Tell us how the product performed overall when used for its designed purpose

They are very comfortable and perform exceptionally in all weathers; they give great wind defence, bead water effectively and breathe really well under heat or hard efforts. The rear panel also solves any transparency issues.

Tell us what you particularly liked about the product

The weave fabric and leg grippers.

Tell us what you particularly disliked about the product

No easy pee design.

How does the price compare to that of similar products in the market, including ones recently tested on

They're expensive. There are comfortable and breathable options around the £160 mark, such as 7mesh's WK3 bib shorts (£160) and Velocio's Women's Ultralights (£168).

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

Overall, these are outstanding bib shorts for all weathers and types of ride. There are minimal seams, the leg grippers are super comfy and the tabs on the thin straps help with arranging them flat. The finish quality is also top notch and these are showing no signs of wear – the thin woven fabric is proving robust as well as breathable. Yes, the price is very high, but these are well worth it.

Overall rating: 9/10

About the tester

Age: 23  Height: 177cm  Weight: 62kg

I usually ride: Road bike  My best bike is:

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: road racing, cyclo cross, commuting, touring, club rides, sportives, general fitness riding, Gravel riding, indoor turbo and rollers, track

Latest Comments