MILLE GT UZ 3/3 Bib Tights S11

The MILLE GT UZ 3/3 Bib Tights S11 from Assos are the Ultraz winter solution of the S11 generation for harsh, wet and windy conditions on Swiss roads. The core is a SPHERE Ultra softshell, combined in a twinDeck construction with the highly insulating RX Extreme thermal textile, so that cold, wind and splash water protection succeeds without heat buildup. A new, free-floating two-layer construction (bodyMapping Tec) reduces seams and lets the tights work noticeably more freely with each pedal stroke. The AEPD 11 regularFit ensures stable, long-distance-suitable fit, and the updated MILLE GT S11 chamois with 12mm cushioning, 3D Waffle, goldenGate 2.0 and Sundeck front reliably relieves pressure during winter miles. Available in seven sizes from XSS to 3XL, so the fit works even with base layers and overshoes.

  • SPHERE Ultra softshell with twinDeck over RX Extreme: storm-proof wind and rain protection with high breathability.
  • Free-floating two-layer construction (bodyMapping Tec) for more freedom of movement and less friction when pedaling.
  • AEPD 11 regularFit and Louvre Tec knee shape for stable, wrinkle-free fit on long winter rides.
  • MILLE GT S11 Insert: Shock-Absorb Damping Mono 12, 3D Waffle, goldenGate 2.0 and Sundeck for pressure relief and ventilation.
  • rollBar bib construction keeps the insert securely in position during weight shifts.
  • Raw Cut ankle finishes for friction-free layering with winter overshoes.
  • Reflective strips on the lower leg increase visibility in twilight.
  • Seven sizes (XSS–3XL) for precise winter layering.
  • Clima Code 3/3 stands for winter performance with maximum protection at Assos.
  • Material composition: 73% polyamide, 24% elastane, 3% polyester.

Technical Details and Features

The front, hips and legs receive an additional SPHERE Ultra layer, while RX Extreme warms close to the skin, regulates moisture and supports a dry microclimate thanks to water-repellent treatment. The bodyMapping construction sews the two layers only along one edge, which reduces seams and increases mobility – unlike many stiff softshell tights. In the saddle, the AEPD 11 regularFit convinces with trickle-down stability from the Racing Series, supported by rollBar bibs. The MILLE GT S11 chamois combines 12mm cushioning with 3D Waffle foam and goldenGate 2.0, so the insert can work freely with the body; at the front, Sundeck provides noticeable pressure relief. The setup is rounded off by Raw Cut finishes and subtle reflective details for visibility in the winter months.

Applications and Benefits

These bib tights are built for deep winter days with wind, drizzle, spray and road splash water – typical for passes, lake loops and commute routes between the Mittelland, Lake Zurich and the foothills. The storm-proof SPHERE Ultra membrane protects exposed zones, while RX Extreme prevents overheating on climbs and still dries quickly. The free mobility of the two-layer construction helps keep cadence smooth when terrain changes. The MILLE GT S11 chamois stays stable even after many hours, making the tights ideal for base training, long commutes and winter brevets. Reflective details improve visibility during morning and evening rides.

Fit, Sizes and Layering

With the regularFit of the AEPD 11 platform, the tights are designed for long distances and can be easily combined with base layers and winter jackets. The size range from XSS to 3XL makes it easy to choose a precise fit – even with additional insulation on the torso and feet. Raw Cut ankle finishes minimize bulk and don't rub under overshoes, which is particularly pleasant on wet roads. The rollBar bibs stabilize the insert during sprints, climbs and in corners, so nothing shifts when you put down power.

Care, Durability and Safety

All textiles used are either wind and waterproof or equipped with an environmentally friendly water-repellent treatment, so water beads off and the insulation works. The robust RX Extreme knit withstands winter stress while remaining breathable. For additional safety, the reflective lower-leg elements flash in the pedal cycle. Assos backs the product with 2 years warranty, which corresponds to the demand for longevity and service.

What the experts say

"They've stood out as arguably the best all-round performers I've tested in 2024, getting the blend of comfort and protection about as good as it can be."

The Assos Mille GT Ultraz Winter Bib Tights are excellent winter cycling tights that successfully balance weather protection with comfort and flexibility. Despite their premium price of £250, they deliver impressive performance across multiple rides in varying winter conditions, with well-positioned seams, a comfortable chamois, and minimal knee restriction that sets them apart from competitors.

BikeRadar
(4.5/5)
Retrieved on Sep 12, 2026
"By using two layers, Assos has allowed both layers to excel rather than trying to find one fabric that will do everything, and meant I could comfortably use these on the coldest days without any concerns."

The Assos Mille GT Eisenherz Ultraz Winter Bib Tights S11 are exceptional winter cycling tights featuring innovative dual-layer construction that separates weatherproofing from thermal insulation. The reviewer found them to be the best bib tights in over 10 years of testing, offering superb warmth, breathability, comfort, and freedom of movement, though the £305 price tag is a significant drawback for most cyclists.

road.cc
(4.5/5)
Retrieved on Sep 12, 2026

We've automatically collected and summarized these independent reviews from websites of cycling magazines, online publications, and blogs to help you make an informed decision. While we strive for accuracy in our summaries, prices mentioned may be in different currencies and might differ from our current shop prices.

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