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Castelli Mens Sorpasso RoS Wind Bibtight Black
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Castelli Men's Sorpasso RoS Wind Bibtight

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Mfg PartNum:
rating(12 customer reviews)
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MSRP: $259.99
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Finally, tights for the hard-working cyclists who power through all four seasons.

For the cyclist who rides seriously right through the winter months, upgrade your daily routine with the Castelli Men's Sorpasso RoS Wind Bibtight. This workhorse performance tight elevates your performance from good to great, no matter how long you've been on the bike.

Constructed with a GORE-TEX INFINIUM™ WINDSTOPPER® fleece-backed panel to cover your most sensitive parts as well as your thigh muscles to keep them at ideal operating temperature. While many wind tights will sacrifice fit or comfort or breathability for that crucial wind protection, the two-way stretch of this fabric combined with careful patterning makes for minimal compromise and maximum comfort. Everything on this tight represents our commitment to performance and comfort — the non-windproof parts are composed of Nano Flex 3G and Nano Flex Xtra Dry to provide stretch, warmth, breathability and an incredibly effective water-repellent finish. With a seat pad constructed from top-of-the-line Progetto X2 Air for comfort during long rides, and with a bib designed for comfort as well as performance. Large reflective panels at the back of the ankle provides moving reflectivity that is more noticeable to approaching cars.

If subfreezing temperatures aren't going to hold you back, you need the Castelli Men's Sorpasso RoS Wind Bibtight. Elevate your winter rides with the best tights developed to date.


  • Nano Flex 3G fabric for our best mix of warmth, stretchy compression, softness and water repellency
  • GORE-TEX INFINIUM™ WINDSTOPPER® X-Fast fleece-backed fabric panel on upper front and thighs for extra warmth
  • Nano Flex 3G back panel to protect from road spray
  • Anatomic cut to hips and knee
  • Reflective inserts for maximum visibility from behind
  • Lie-flat elastic bib straps
  • YKK® Camlock® zippers at ankles
  • Progetto X2 Air seamless seat pad

  • Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    Size Chart




    Leg Type: Full Length 


    Style Type: Bibtights 

    Black - Small

    Mfg PartNum: M20525010-2 

    Black - Medium

    Mfg PartNum: M20525010-3 

    Black - Large

    Mfg PartNum: M20525010-4 

    Black - X-Large

    Mfg PartNum: M20525010-5 

    Black - 2X-Large

    Mfg PartNum: M20525010-6 


    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Amazing for rain
    by Broc

    Did a 2 day race at the Oregon Coast that had a 36 hour period of continuous heavy rain. It was about 48deg Fahrenheit with heavy rain on first day. Kept me dry for about an hour and were amazing while they we wet. Never got cold at all. Wish I had 2 pairs go wear for the 2nd day.

    Only 2 gripes, they are a bit "stiff". Does not bend freely at the knee very well but when I'm riding in rain, its the least of my worries.

    Second gripe is I developed rubbing at the seems near the crotch area that actually rubbed the skin off my legs. This is likely due to them being completely saturated, but this was the only drawback I experienced. Otherwise if its raining, these are the best choice.

    Reviewed 5/17/2024
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    Inaccurate sizing
    by RacerX
    Cycling Enthusiast

    Just received product today. Material is nice, but this item runs extremely small. I'm 5'10.5" and 160 lbs. with 32" waist and 33" true inseam cycling measurement(32" jeans). Normally I take a size L in Castelli shorts and jersey items, and XL in Castelli jackets. After reading reviews and Castelli sizing recommendations I sized up to XL. Unfortunately, the XL legs are very tight and too short by about an inch... and my legs are very slender . No way I should be an XL...even by Castelli "race fit" standards. Another example of messed up Castelli sizing.

    Reviewed 3/14/2024
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    Great winter tights
    by NCbiker
    Cycling Enthusiast
    Eastern NC

    Love these. The chamois pad is amazing and the tights are very warm. I've worn them down to the lower 40's and was comfortable. They run small for us fat Americans. I usually take an XL and took suggestions to order XXL and it is perfect. For reference, I am 5'9" and 195 lb. I got them on sale, so the value was pretty good. Regular price and it would probably be a bit more than I would spend.

    Reviewed 5/10/2024
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    Great bib, recommend for winter ride
    by shiltian
    Cycling Enthusiast
    Sudbury, MA

    I have the non-GorTex version. The wind can easily "penetrate" it. The off-season deal makes it a good chance to upgrade it. Tried it once, and it did feel warmer. Happy purchase.

    Reviewed 3/12/2024
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    Very nice pair of cold weather bib tights
    by mtbmike411
    Competitive Racer
    1 of 2 customers found this review helpful.

    Overall love the fit of Castelli items. Nothing loose or flappy. In this particular pair of bib tights I did get a slight amount of bunching behind the knees that caused some irritation, though I'm hoping that goes away as I use them more and the fabric softens. Typical Castelli top-line Progetto X2 chamois is quite decent, though I think there are better ones out there for the real long miles. I am 6'3" and 175lbs and the large fits me great. The wind blocking ability of these tights combined with the light brushed insulation does what I want it to do, and these bib tights are warm when cruising easy below 40F, and warm when hammering down into the teens.

    Reviewed 1/24/2023
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    Cold wet weather DEFEATED
    by Tim

    Superb harsh weather victors wet Freezing weather won't stop you with these foul weather Bibs

    Best I've had

    Reviewed 1/12/2024
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    Go to freezing weather tights
    by Rob
    1 of 2 customers found this review helpful.

    These are the tights that I wear when it�s 25-35 degrees outside. Below that temperature I stay home. Excellent chamois and very good fit, just size up to your typical Castelli size.

    Reviewed 2/18/2023
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    Nice tights for adverse conditions
    by jdromick
    Cycling Enthusiast
    Eugene, OR
    2 of 2 customers found this review helpful.

    I bought these tights to extend my riding season to when it's 35F and raining out. I road tested them today on a 70 minute ride in the 40"s with steady rain. They performed well. I was pretty dry, and warm, the entire ride. I am 6' tall and weight 172 lbs and I bought the large size. They fit pretty well, although I would like the legs to be an inch longer. That is certainly not a deal breaker. I would not wear these tights above 50F, as they would be too warm, but for cold and/or wet conditions they seem pretty ideal.

    Reviewed 12/31/2020
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    Great full-length bib with decent water resistance
    by Anonymous
    Cycling Enthusiast
    Everett, wa

    great at keeping the wind out, but definitely not a fully waterproof pair of bibs, but does a good job fighting the water.

    Reviewed 11/22/2022
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    Great Bibs for those cold winter days
    by Anonymous
    Cycling Enthusiast
    New Jersy
    3 of 3 customers found this review helpful.

    Purchased these bibs specifically for cold damp days in the saddle. They are perfect for those cold day (35 degrees or less). Great wind barrier that keeps your legs warm, but not toasty. Excellent chamois, as expected from Castelli. Sizing is European, so you may have to size up from your normal kits. Comfortable fit.

    Reviewed 1/7/2021
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    These bibtights keep me warm in high 30's to low 40's
    by Anonymous
    Cycling Enthusiast
    San Francisco Bay Area
    2 of 2 customers found this review helpful.

    Be sure to order a size up . I'm 5'-9", 147 lbs. and the Large fits . I had to return a Medium.

    Reviewed 3/7/2022
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    Castelli Men's Bib
    by Jacob Tanz
    Cycling Enthusiast
    Los Altos, CA
    0 of 1 customers found this review helpful.

    Great winter Bib

    Reviewed 3/1/2021
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