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Pactimo Summit Stratos Range Bib Shorts



Hands down the most comfortable bib shorts I've tried
Super comfortable
Cargo pockets
201g Recommends

This product has been selected to feature in recommends. That means it's not just scored well, but we think it stands out as special. Go to recommends

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.

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The Summit Stratos Range Bibs are Pactimo's most expensive bib shorts. They are designed for long rides and have useful cargo pockets. They cost £186, but they are hands down the most comfortable bib shorts I've tried.

Pactimo says the Summit Stratos Range Bibs are designed for 'guaranteed comfort on extreme adventures, all-day rides and self-supported road/gravel races'. That is a bold statement, but these shorts have really impressed me by actually delivering on that promise.

> Buy these online here

You see, I'm envious of people who never have any saddle area issues. On anything over 60 miles, I'd expect some chafing, and on a multi-day ride, especially off road, I'm pretty raw by the time I'm finished.

Not so with these shorts. I got to the end of a two-day gravel bikepacking trip from Barnstaple to Bath in pretty wet conditions with no nether region issues whatsoever. Likewise on a two-day 200-mile round trip to Stratford-on-Avon in 30 degree heat. As you can imagine, these are now my favourite shorts.


Pactimo makes these bibs from Cerami-K fabric. The label says an 80% nylon, 20% spandex mix for the non-printed parts, and a 50% polyester, 35% nylon, 15% spandex mix for the printed parts. Cerami-K, it says, is a 'Swiss-milled, ceramic-print fabric that is super lightweight and extremely durable while also offering an even-compression fit for all-day support and heat dissipation'.

This ceramic print manifests itself in hexagonal dotted shapes on the fabric. There isn't really a noticeable texture difference to the Lycra on other bib shorts I've tried.

2021 Pactimo Summit Stratos Range Bib Shorts - front detail.jpg

There is no bobbling yet on the fabric, so early evidence suggests it will prove to be durable. So far, so good, anyway.

I had perfect conditions to test the 'heat dissipation', otherwise known as breathability and wicking properties, on both of the rides mentioned above. On the hot ride, they dealt with sweat really well. On the wet ride, they only felt like a soggy mess when I put them on the morning of the second day, soaking wet. After that, I didn't really notice them.

The compression Pactimo's marketing talks about is just right for me: a supportive fit without being restrictive.

2021 Pactimo Summit Stratos Range Bib Shorts - legs back.jpg

The fabric feels lovely next to the skin, and I didn't experience any chafing from seams or tabs anywhere.

The pad is made by Elastic Interface, and is its second generation Endurance Anatomic Super Air Chamois. It works really well for me – for hours and days on end.

2021 Pactimo Summit Stratos Range Bib Shorts - chamois.jpg

I found the strap length well judged, particularly for long days. When you put the shorts on, they are close fitting, but nowhere near tight enough to force you into a cycling position.

2021 Pactimo Summit Stratos Range Bib Shorts - back.jpg

The leg grippers are a 35mm band of what looks like a custom printed silicone pattern; they grip enough to keep everything in place, but not so much that they irritate or rip out leg hair (I don't shave mine).

2021 Pactimo Summit Stratos Range Bib Shorts - cuff gripper.jpg

So far, what I've described is the same for Pactimo's Summit Stratos '12-hour' bibs. Where these differ is that they also have four stretch mesh pockets – one on each leg, and two on the lower back.

2021 Pactimo Summit Stratos Range Bib Shorts - side pocket.jpg

I didn't find myself using the back pockets, but they are there if you need them. If you don't use them, you don't notice they're there. There is also a little elastic loop above the left lower back pocket, in case you want to stow a pump there.

2021 Pactimo Summit Stratos Range Bib Shorts - pocket back.jpg

Initially, I was unsure about the need for cargo pockets, but I found they are super useful and am a convert. They'll take a face mask, riding shades, gels, food wrappers, a GoPro, a phone... pretty much anything (though not necessarily at the same time) that is not too heavy and that you want quick or easy access to. All those things can go in a jersey pocket, but these provide both more space, and easier access than a jersey pocket.


The medium pair on test fit me perfectly, as expected – I'm usually a medium in any non-Italian bib shorts.

My measurements are exactly those printed under 'M' on Pactimo's size chart.


At £186, these bib shorts are very expensive. However, they are so good that, for me, it makes their price tag acceptable.

They are not alone at this price point, either. I reviewed Le Col's Hors Categorie Bib Shorts II a little while back. They cost £180 and are decent bib shorts, but they are not in the same league when it comes to comfort.

MAAP's Team Bib Evos cost £190, and you can pay more still: Castelli's Premio Black Bib Shorts cost £220.

> Buyer’s Guide: 38 of the best cycling bib shorts

Cheaper shorts are, of course, available. I really like the Stolen Goat Bodyline One Bib Shorts which, if not exactly cheap, cost a lot less at £98.


If you want super-comfortable shorts for long hours and days in the saddle, Pactimo's Summit Stratos Range Bibs are the most comfortable I've tried by a long way. Yes, £186 is a lot of money, but for me it's a price worth paying for a happy backside.


Hands down the most comfortable bib shorts I've tried

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Make and model: Pactimo Summit Stratos Range Bib Shorts

Size tested: Medium

Tell us what the product is for

Pactimo says: 'This ultra-endurance bib has been designed with 4 stretch-mesh pockets; two on the lower back, two on the legs, for hauling additional cargo and necessities over extreme distances. They are the ideal choice for those who want guaranteed comfort on extreme adventures, all-day rides and self-supported road/gravel races. The 2nd Generation Elastic Interface® Endurance Anatomic Super Air chamois was uniquely designed to Pactimo's strict comfort specifications for a long distance pad. The extremely durable Cerami–K fabric, noted by its unique dotted pattern, provides uninhibited movement, long distance comfort and heat dissipation during maximum exertion. Lightweight mesh and raw-edge uppers provide excellent support while also ensuring lasting comfort and an accommodating fit for a variety of torso lengths. Single layer, mesh knit leg bands guarantee a slip-free fit while also allowing for moisture movement away from the skin.'

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

Pactimo lists these details:

Swiss-milled Cerami–K fabric

2nd Generation Elastic Interface® Endurance Anatomic Super Air chamois

Mesh and raw-edge cut uppers

Two mesh thigh pockets

Two mesh lower back pockets with mini pump loop

Breathable, stretch mesh leg bands

Reflective accents

Rate the product for quality of construction:
Rate the product for performance:
Rate the product for durability:
Rate the product for fit:
Rate the product for sizing:
Rate the product for comfort:
Rate the product for value:

They are very expensive, but they are also very good. They're also cheaper than some from Castelli and Maap...

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

The care instructions say, "Machine wash cold with mild detergent on delicate cycle. Do not bleach. Line dry only. Do not wring, iron or dry clean. Do not use fabric softener. Close zipper before washing."

I just did what I always do with my cycling kit: in with the rest of the washing on 40 degrees. They still look as good as new.

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

These are hands down the best and most comfortable shorts I have ever used.

Tell us what you particularly liked about the product

Super comfortable, and useful pockets.

Tell us what you particularly disliked about the product

The only negative is the price really, they are expensive.

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

There is no doubt that these bib shorts are premium in performance and comfort. And in price. Other premium shorts, like the Le Col Hors Categorie II at £180 and MAAP Team Bib Evo at £190 are in the same price range. You can pay more still: Castelli's Premio Black Bib Shorts are £220.

Cheaper shorts are also available of course. I really liked the Stolen Goat Bodyline One Bib Shorts at £98.

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

Pactimo's Summit Stratos Range Bibs are super comfortable for long hours and days in the saddle; the most comfortable I've tried by a long way. Although £186 is a lot of money for bib shorts, for me it's a price worth paying for a happy backside.

Overall rating: 9/10

About the tester

Age: 44  Height: 1.78m  Weight: 77kg

I usually ride: All of them!  My best bike is: Ribble Endurance SL disc

I've been riding for: Over 20 years  I ride: Most days  I would class myself as: Expert

I regularly do the following types of riding: cyclo cross, commuting, touring, club rides, mtb, Zwift

Add new comment


MrMoo | 2 years ago

I've tried both the stratos and the raptor bibs from Pactimo. The raptors are OK but the pad isn't as good as Castelli progetto air. But the stratos are awful. I don't get on with the pad at all - I've had saddle sores twice from it despite only using for 3-4 hours each time. Even after 1-2 hour rides it's scratchy. The leg material and seams are also scratchy in places and the leg gripper (which grips well) has elastic threads coming out of both legs that appeared after the first use. Finally the back mesh is very fine which is good except it starts low down in your back so in anything other than sunny summer you get a cool/cold breeze on your lower back. 
Avoid - buy Castelli FAR4 or Endurance 3 instead. 

MrMoo replied to MrMoo | 2 years ago

Oh - and my less-than-5-star reviews never appeared on their website. Shoddy behaviour for an internet retailer. 

riggbeck | 2 years ago
1 like

"....hands down the most comfortable bib shorts I've tried."

ooooo er carry on cycling.

longassballs | 2 years ago
1 like

I have a couple of pairs of the old Stratos bibs before this years update and they're fantastic. I'm in love with them. So much so that I'm a total Pactimo convert. I don't see the point of buying any other brand's bibs (same for most of their range too).

The older version that I own has the same leg material and the best pad I've ever used, which has now been updated, but the upper was only passable - a netted material affair that seemed out of date. It was still comfortable but felt ripe for an update. The new more modern upper brings the bibs on a par with the rest of the competiton.

I love the fact that you can choose a normal leg length, or my preference the longer version. The leg grippers actually work too. It's noticeable that you can ride for 6 hours without touching your shorts.

The only negative in the review is the price but that is somewhat negated by the fact that Pactimo have many regular sales throughout the year with up to 50% off. Knowing what I know now though I wouldn't begrudge (much) paying full price.

Whenever anyone asks I always recommend Pactimo. I love their jerseys, base layers & rain gear too. It's only down to the fact that I'm well stocked in clothing that I don't ride in Pactimo year around. As my winter stuff wears out I'll be replacing it with their stuff. I'm only gonna stray now for the specialised stuff like insulated gillets, shake dry jackets etc

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