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Castelli Omloop Thermal Bib Short - Men's

$149.95

Item # CST00DJ

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Item # CST00DJ

Fit for a Belgian spring.

No, your eyes aren't deceiving you: the Castelli Men's Omloop Thermal Bib Shorts are purposely longer than typical shorts. The Omloop's unconventional length situates it somewhere between knickers and shorts, paying homage to the challenging mix of conditions that define the early season classic of the same name.

By adding coverage all the way to the knee but not beyond it, Castelli avoids the restrictive fit and feel that often plagues knickers while adding a noticeable amount of warmth. If the conditions you ride through in fall and winter bear any resemblance to Belgium in late February, you'll want to add the Omloop to your drawer.

Castelli constructs the Omloop with Thermoflex, a stretchy, breathable thermal fabric developed to insulate and move with you in the saddle. Inspired by the myriad ways the pros adapt their kit to their liking in the face of difficult weather conditions, the Omloop retains a clean, contoured silhouette that would be at home in a race or on your weekend training ride.

Laser-cut leg hems contribute to its streamlined look, and airy mesh bib straps promise to remain a breathable, unobtrusive addition to your layering system. As the Omloop counts itself among Castelli's top-end pieces, it comes built with the Progetto X2 Air chamois. A carefully constructed mélange of multi-density cushioning, the Progetto X2's minimal shape belies its ability to protect you for the long haul, remaining soft and supple over hours in the saddle.

  • Ride through the cold months in this innovative thermal short
  • Form-fitting silhouette closely follows the body
  • Thermal fabric keeps warm air close to skin while it wicks
  • Longer legs blend the best of knickers and shorts
  • Luxurious chamois provides hours of support and relief
  • Reflective accents help you stand out on dim days

Tech Specs

Material:
Thermoflex
Fit:
form-fitting
Chamois:
Progetto X2 Air
Bib:
yes, mesh
Reflective:
yes
Recommended Use:
cycling
Manufacturer Warranty:
1 year

Size chart

Castelli

Men's Apparel
 SMLXLXXL3XL
Chest 36.2in
(92cm)
37.8in
(96cm)
39.4in
(100cm)
41.3in
(105cm)
43.3in
(110cm)
45.3in
(115cm)
Waist 31.5in
(80cm)
33.1in
(84cm)
34.6in
(88cm)
36.6in
(93cm)
38.6in
(98cm)
40.6in
(103cm)
Hip 37in
(94cm)
38.6in
(98cm)
40.2in
(102cm)
42.1in
(107cm)
44.1in
(112cm)
46.1in
(117cm)
Inseam 31.9in
(81cm)
32.3in
(82cm)
32.7in
(83cm)
33.1in
(84cm)
33.5in
(85cm)
33.9in
(86cm)
How to Measure:
For best results, take measurements over your underwear.
Chest:
Measure under your arms, around the fullest part of your chest.
Waist:
Measure around your natural waistline, keeping the tape a bit loose.
Hip:
Measure around the fullest part of your body at the top of your legs.
Inseam:
Using pants that fit well, measure the crotch seam to the bottom of the leg.

Reviews & Community

REVIEWS

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New to bibs

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

Coming from the mountain side, I was hesitant to try bibs. As the weather has started to cool down i would looking for a warmer option to go under my baggy shorts. I love the longer leg length! I love the Progetto X2 Air chamois. I love the warmth that these provide. They stayed put and allowed me to enjoy my ride without worrying about the placement of my chamois. After giving these several good rides I have decided to pick up a few more pair. I love these!!!!

If you have any questions about this or any other gear shoot me an email at jasjones@backcountry.com or give me a call at 801-523-4053

Avg. ride time: 10h 26m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Built for taller people

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

This a nice option to add to the collection for some cool weather riding. When its too cool for regular shorts but not quite low enough for knickers or tights, the added length over the knee really does make a difference adding warmth over your quads. The inside of the short is a fuzzy nylon creating amwarm feel. I love the straps - lightweight, thin, and basically nonexistent. Like many other Castelli shorts, the Progetto X2 Air chamois is fantastic. I have used these bibs climbing up and descending canyons on pavement and as a base layer under my mountain bike shorts on dirt. I tend to run a bit cooler than most people and was comfortable down to 45 F on the road all the way up to 65 F on a sunny, dry day. They are very breathable, providing comfort when sweating out intervals up the mountain and facing the cool descend down. Not the best option on the market to prevent rain from reaching your skin. I wear a large in Castelli jackets and tights, these run slightly big. The one negative is the longer fit. The length runs a little below my knee when standing straight up, but it goes unnoticed when riding my bike. The overall fit of the piece leans towards the looser side, especially lower towards the knee. When I use these riding, the longer length doesn’t bother me. It probably adds a little extra warmth. For somebody that is taller and has a bigger build, these shorts will fit perfectly.

Avg. ride time: 2h 58m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Disappointed in the design/fit

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

I was torn between choosing the Giordana G-Shield thermal shorts and the Castelli Omloop. I decided to buy the Omloop because of the promo literature and videos on this product. Well it just didn't work for me and maybe that is because I am a American who is 6 feet, 210 lbs at this point in my life. I thought I should order an XXL consider the way Castelli runs pretty small. I have only had one pair of Castelli shorts sever years ago and quite frankly the shorts fell apart at the junction of the short material and the leg band so I didn't buy another pair until now. I wear a 32 inseam pant and 36 waist

Ok but not great

  • Fit: True to size
  • Size Bought: xxl

Got these to fill in between my Bib knickers and the regular Bibs. They are warmer than my summer bibs but the material by the knees is loose and ends at the top of the knee for me and doesn't do much. Will keep to use down to high 40's-50's but will keep using the Castelli Bib Kinckers for colder rides. Shines don't have much issue and my socks almost meet the knickers. I tried both XL and XXL - kept the larger for torso fit- my other Castelli are XL and fit great

Avg. ride time: 5h 17m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Too Large

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs large
  • Size Bought: Small

It may have good features, but if it does not fit correctly, it fully deserves the 1 Star review:

I have been wearing Castelli products for a lot of years, and have gradually gone from their large size shorts down to small as I gradually lost some weight and became leaner.

Castelli has a European fitting, meaning that you typically wear a medium, you should size-up to a Castelli large.

Last year I purchased Castelli knickers (size small) for Autumn/Fall riding and was instantly impressed at the snug compression fit. I now shall be wearing Castelli small sized bib shorts in future, and I already wear their Small jerseys.

Which brings us to the Omloop bib shorts. I ordered the small and when first putting them on, noticed that the shorts went beyond my knees, and were not a snug fit, contrary to the description given by Castelli on Backcountry's website. I thought that maybe there was a production fault in that the wrong labels were put on to the wrong shorts. I contacted Backcountry and they sent out another pair (size small) thinking that maybe there was a fault. The newer pair were similar.

The idea behind the shorts is great, and they keep your thighs warm as they claim to. However, at first I thought that they fitted like a Castelli medium, but when I wore them on the bike for a ride, they felt more like a Castelli large.

This is the first time in many years that Castelli (in my opinion) have gotten their sizing completely wrong. okay, I'm not the tallest, but this is a Castelli small sized bib short that we talking about! I will also be contacting Castelli themselves to give my feedback, as they have offices here in the US and have previously been open to conversations about their gear.

I have more photos showing how the material is ill-fitting and bunches, but it seems that I can only add one photo. Hmmm.

Too Large

Are these cut low enough to pull down for a natural break?

Avg. ride time: 0m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Castelli nailed it

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

I was torn between getting the Nano Lite Pro shorts or this, and decided to pick this because of the better chamois (my Aero Race already has the same one, and it's fantastic) and purported knee coverage. I've been through a recent rain, and find that being wet doesn't feel uncomfortable or cold; giving up the water protection of the nano shorts wasn't a big deal.

Well I don't know if I made the right choice or not, but the Omloop sure is a fantastic choice nonetheless. First off, the length. The shorts extend just over the knee, with a soft fleecy material that keeps in the warmth. It's elastic, but it's a very soft grab. There's a little bit of extra material when standing straight up, but I didn't notice the wind flapping it about when riding. The legs didn't ride up whatsoever.

The fit is surprisingly true. My only other Castelli shorts were the Aero Race, and those were a little on the compressive side. These just like to hug your body in the soft material and feel like a second skin. Same size for both, obviously.

As for warmth, well going by Castelli's website, these are warmer than the nano shorts, given the extra coverage on the knee. I took these out on a windy ~65 degree ride; a bit warm for tights or leg warmers, but perfectly fine for these. Plus, if it gets windier/colder, just slap on the warmers.

Given the flexibility of these shorts, I'd recommend giving these a try. Sure, you might get more wet on those fall rides, but the comfort of the better chamois and knee coverage is a godsend.