Assos Uma GT Bib Shorts S11

The Assos Uma GT Bib Shorts S11 are the foundation of the Assos women's endurance lineup — the model that defines what a daily training and long-ride short should be. The S11 generation brings meaningful refinements across every layer: a new body textile that's lighter and more durable, bib strap technology borrowed from the Racing Series, a more breathable insert, and an extended leg length that reflects how performance shorts are worn and cut today. At $210, this is the benchmark for women's cycling shorts at the endurance tier.

The body is built from QUARTZ, a new warp-knit textile developed for S11. It's lightweight and breathable with permanent odorControl built into the fiber — not applied as a coating — and it holds a true-black finish that doesn't whiten or go transparent under stretch. Eighty percent of the QUARTZ content is pre-consumer recycled polyamide, a meaningful sustainability credential that doesn't come at the expense of performance. The regularFit construction uses body-contoured shaping and minimal seaming to eliminate friction points and make layering under a jersey clean and effortless.

The bib strap system uses rollBar — a patented bracing architecture adapted directly from Assos's Racing Series. rollBar stabilizes the insert and keeps it precisely positioned as your weight shifts through sprinting, climbing, and cornering. What this prevents in practice is the insert migrating forward or sideways during hard efforts, which is the primary cause of saddle discomfort on longer rides. The leg openings use PILtec Plug-In: an ultrabreathable band with an invisible microdot silicone treatment that grips reliably in wet and dry conditions without binding. The zeroPressure Waist uses a soft, highly elastic construction that holds position without any pinching or pressure at the waistband.

The GT S11 insert runs four technologies: Shock-Absorb Damping Mono 12 provides the 12mm compressive foam platform with thermoformed shaping that eliminates ridges; the patented 3D Waffle adds a three-layer perforated structure for breathability and weight reduction; goldenGate 2.0 is a free-floating construction with new wing cut-outs that reduce friction through the full pedal stroke; and Sundeck Tec is an ultrasoft front panel that minimizes the insert's footprint at the front, reduces pressure points, and increases airflow to the sensitive anterior region.

Specs at a Glance

• Textile: QUARTZ — lightweight warp knit, permanent odorControl, 80% pre-consumer recycled polyamide
• Fit: Regular
• Temperature range: >69.8°F
• Insert thickness: 12mm (GT S11)
• Breathability / Quick Drying: 5/5 / 5/5
• Ride intensity: 3/5 (endurance)
• Bib straps: rollBar — patented Racing Series bracing technology
• Leg grip: PILtec Plug-In — microdot silicone, wet/dry retention
• Waist: zeroPressure — soft, elastic, no pinching
• Insert technologies: Shock-Absorb Damping Mono 12, 3D Waffle, goldenGate 2.0, Sundeck Tec
• Sizes: XS–2XL | Colors: Blackseries, Burgundy Red, Moss Green, Wild Brown

Design Benefits

1. rollBar bib strap system — Racing Series technology that locks the insert in place during dynamic effort, preventing migration and the saddle discomfort that comes with it on long rides.
2. QUARTZ textile — True-black, permanent odorControl, and largely recycled construction that stays structural and opaque under the compression demands of a cycling short.
3. GT S11 insert — Four-component system tuned specifically for endurance riding: compressive foam base, breathable 3D Waffle, free-floating goldenGate 2.0, and a pressure-reducing Sundeck Tec front panel.
4. PILtec Plug-In leg grip — Ultrabreathable band with invisible silicone that holds without binding in any conditions, extending the comfortable range of the shorts into heat and humidity.
5. zeroPressure Waist — Eliminates the pressure and pinching common to performance waistbands while maintaining a secure hold across all riding positions.