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Assos Mens Mille GT Ultraz Winter Bib Tights Black
Assos Mens Mille GT Ultraz Winter Bib Tights
Assos Mens Mille GT Ultraz Winter Bib Tights
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Assos Mens Mille GT Ultraz Winter Bib Tights 1
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Assos Men's Mille GT Ultraz Winter Bib Tights

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Mfg PartNum:
rating(7 customer reviews)
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MSRP: $299.00
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Crush the winter cycling season with the bib tight built to provide you with a warm, comfortable ride no matter how cold.

To succeed during the harsh winter months, improve your rides with winterproof textiles to deliver unmatched levels of insulation, breathability, and weather resistance. With double-layer protection throughout and a membrane-backed front panel, the Assos Men's MILLE GT Ultraz Winter Bib Tights stand in as the most protective bib tights in intense cold-weather conditions.

Constructed with highly insulating brushed-back RX Heavy with an added second layer on the outside for added protection. For this twinDeck construction, Assos put their NEOS Ultra textile to the test — an ultrathin 2L softshell with PU bonded membrane that's water-resistant and 100% windproof. With a design like this, the element-facing section of your legs and glutes remains protected from the snow, rain, wind, and low temperatures that winter months are known for. An added feature of RX Light makes up the backs of the legs, delivering increased breathability and comfort in this high-flex zone.

With the regularFit category, these tights are perfected to provide a lightly compressive fit thanks to their double-layer design, but not as tight as the high-intensity racingFit apparel. Fabric panels flex with each pedal stroke, as they're both pre-shaped and sewn to fully wrap and support the upper leg muscles, knees, and calves while in motion. Every aspect of the the Assos Men's MILLE GT Ultraz Winter Bib Tights is designed simply to tackle anything that weather dares throw at you to interrupt your winter rides.


  • Warp-knit RX Heavy fabric developed to wick moisture and add insulation while still highly flexible
  • 2L windproof and highly breathable softshell NEOS Ultra is constructed with a PU bonded membrane, added along the leg panels for increased water-repellency
  • Double-layer twinDeck fabric construction boosts insulation using a combination of NEOS Ultra and RX Heavy textiles
  • Asymmetrical-stretch warp-knit RX Light fabric provides light insulation and boosts comfort in high-flex areas
  • Featuring new black colorway, the MILLE Winter Insert uses proven 8mm of memory foam to nestle at the intersection between comfort and performance
  • Perforated 3D waffle foam provides lightweight breathability
  • Patented goldenGate technology interrupts stitching along both insert's side panels, allowing a more three-dimensional freedom of movement
  • Y7 Frame Carrier Bib Tech — wide, flexible bib straps converge at the upper back in a Y-shape design for a flat, stable structure that doesn't irritate the shoulders
  • Stabilizatior V3 is a dorsal stabilizer in solid mesh with limited vertical stretch, also includes UMA GT line graphics and climaCode
  • Reflective bands placed on the backs of the calves boost visibility
  • RegularFit is optimized for total comfort in the riding position, with a more relaxed cut than the second-skin racingFit
  • 81%PA 18%EA 1%PL composition

  • 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




    Mfg PartNum: 1114215 

    Black - Small

    Leg Type: Full Length 

    Style Type: Bibtights 

    Black - Medium

    Leg Type: Full Length 

    Style Type: Bibtights 

    Black - Large

    Leg Type: Full Length 

    Style Type: Bibtights 

    Black - X-Large

    Leg Type: Full Length 

    Style Type: Bibtights 

    Black - 2X-Large

    Leg Type: Full Length 

    Style Type: Bibtights 


    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Best Bib tights I've used
    by Oaklandmark
    Cycling Enthusiast
    Oakland, CA
    1 of 1 customers found this review helpful.

    This is my 2d pair of these tights, as I am extremely happy with the 1st pair, after 3 years of winter use. The fit , design, quality of materials are all excellent. They are expensive, so I wait for a sale. Far superior to PI, which seems to have taken a nose dive in quality in recent years, as well as the one pair of Castelli tights I own. I use them in the Bay Area "winter" so it's typically 40's or 50's, although if you are riding in colder weather I am confident these would do the trick. Above 60 they are just too warm, but that's shorts weather.

    Reviewed 3/14/2024
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    Surprisingly warm for any single layer of cycling kit
    by Fort Collins Cyclist
    Cycling Enthusiast
    Fort Collins, CO
    2 of 2 customers found this review helpful.

    First, I'd like to acknowledge the extremely subjective nature of rating winter clothing for warmth. I'm an ice climber and a skier that regularly recreates in temperatures below 0 F, so keep that in mind.

    I've found all of the Utraz line to be incredibly warm given it's relative light weight and extreme low bulk. Most of my winter cycling takes place after work (i.e. in the dark) and I will happily wear my Utraz tights, jacket, and base layer for 2 hours +/- with no concerns. In fact, at much above 30 F, the Ultraz clothing can get to be a bit too warm, particularly if the sun is shining.

    Ultimately, it's my hands and feet that turn me towards home during cold weather rides.

    No high end cycling (or climbing or skiing or running etc etc) gear can be called "a steal", but given what we ask our winter gear to do for us, I gave the Utraz tights 5 stars and have been very pleased with their performance in weather that is really more suited for books and tea than cycling.

    Reviewed 12/6/2022
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    Underwhelming, especially for the high cost.
    by nhmtnbkr
    Cycling Enthusiast
    Nashua, NH
    1 of 3 customers found this review helpful.

    These are definitely a "Wow, these were disappointing" kind of product. Based on the description, I expected something that was significantly more suited for Winter wear. These don't remotely feel like they'd be good for Winter use, short of a layer that wouldn't fit below how they are, seeing their tightness. The chamois seems excellent, but never got to try it. The biggest detraction I found with these and the reason for which I ended up returning them, was the front portion of the bibs is barely above the waistline, which would inhibit keeping drafts out while riding.

    Reviewed 1/2/2023
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    Impressive winter time bibs
    by Anonymous
    Cycling Enthusiast
    2 of 2 customers found this review helpful.

    I purchased these bibs to add to my winter wardrobe. In past winters, I almost exclusively rode in bib shorts covered with an older Assos overall type zip up bib. In spite of these zip up bibs being supposedly windproof, I found them not be keep me warm enough.

    Today, my new Mille Ultraz Winter Bibs arrived in the mail. It was 38 degrees with strong winds. I went for a short 45 minute ride. I am impressed how much warmer these tights are versus my old Assos wintergarb. The foam insert was comfortable and combined with the front panel protection, kept this area warm.

    I did not give these bibs a five star rating only because they are cut low in the midriff. I feel that they would be five star if they protected your stomach area better.

    I rated them pricey, as of course, all Assos is expensive.

    Reviewed 12/6/2020
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    Solid performance and great comfort.
    by doublshotscott
    Competitive Racer
    WW, SEA and PDX area

    Simple and solid performance in a winter bib, great functionality and fit, very comfy on long cold rides around 28-32deg, still very comfy and not too warm when mercury reaches 40-45deg. Excellent moisture management in wide weather variance.

    Reviewed 12/30/2022
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    Excellent fit and superior function
    by doublshsotscott
    Competitive Racer
    Walla Walla, Washington

    Winter time long miles and cold rides, these bibs are the bomb. They work incredibly well in varying conditions .

    Reviewed 3/9/2023
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    Worth the investment
    by Rawlinz
    Portland, OR
    1 of 1 customers found this review helpful.

    The fit & fabric are premium which results in warmth without restriction throughout. Good wind blockage also. Comfortable down to freezing temps although had to cover them with a shell just a few times throughout the winter, probably when I should not have been riding anyway.

    Reviewed 1/12/2021
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