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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:
(7 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
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    1 stars
    Very nice pair of cold weather bib tights
    by mtbmike411
    Competitive Racer

    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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    Go to freezing weather tights
    by Rob

    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
    1 of 1 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
    2 of 2 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
    1 of 1 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

    Great winter Bib

    Reviewed 3/1/2021
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