Assos Uma GTV Bib Shorts S11

The Assos Uma GTV Bib Shorts S11 sit at the top of Assos's women's Endurance Series — refined for long-distance riding where comfort compounds over hours and every detail eventually makes itself known. The GTV line has always been synonymous with all-day comfort, and the S11 generation builds on that reputation with upgrades at every contact point.

The primary fabric is OSSIDIA, Assos's warp-knit compression textile built from 80% polyamide and 20% elastane. The construction uses ultrathin elastic yarns to deliver gentle, fatigue-reducing compression that wraps the large leg muscles without constriction — silky against the skin and highly body-adaptive through the full range of motion. Across the lower stomach, a Sens AIR panel replaces the standard fabric — a pressure-eliminating textile designed to accommodate the abdomen in aggressive riding positions and prevent the pinching that standard compression fabric causes over long rides. The zeroPressure Waist extends this logic to the waistband: soft, highly elastic construction that holds its position without digging in.

The chamois is where the Uma GTV earns its endurance credentials. The Ultra Distance S11 Insert uses a twin-layer platform — 9mm of base foam with an additional 4mm of ultraDistance foam targeted under the ischial bones, the primary pressure points on any long ride. Thermoformed shaping eliminates ridges and seam edges. The rollBar system, adapted from Assos's Racing Series, braces the insert internally so it stays locked in position as your weight shifts through sprints, climbs, and corners. The goldenGate 2.0 attachment lets the insert float front-to-back with your body rather than against it, and side cut-outs reduce volume and friction through the pedal stroke. Two perforation systems — kraterCooler at the leading edge and whirlKrater throughout the pad — create all-directional airflow to maintain a dry, cool microclimate.

Specs at a Glance

• Main Fabric: OSSIDIA — 80% Polyamide, 20% Elastane
• Stomach Panel: Sens AIR — pressure-eliminating, 75% PA / 25% EA
• Chamois: Ultra Distance S11 Insert — twin-layer 9+4mm, ischial bone support
• Leg Gripper: INject — silicone infused into fabric, raw-cut opening
• Bib Straps: bisiClick twin magnetic quick-release closure
• Waistband: zeroPressure — soft elastic, no pinching
• Fit: regularFit — all-day endurance comfort
• Temperature: >70°F / Breathability: 5/5 / Quick dry: 5/5
• Color: blackSeries | Sizes: XS–2XL

Design Benefits

1. OSSIDIA compression — warp-knit construction wraps large muscle groups in fatigue-reducing, body-mapping compression
2. Ultra Distance S11 chamois — twin-layer foam with ischial bone targeting, rollBar stability, and dual cooling perforation systems
3. bisiClick magnetic closures — quick-release bib straps designed for natural stops on long rides without removing your kit
4. INject leggripper — silicone bonded directly into the fabric for a frictionless, secure hold that resists sun and sweat degradation

Final Take

The Uma GTV S11 is built for riders who measure their rides in hours. Every engineering decision — from the floating chamois to the magnetic bib closures to the pressure-free stomach panel — is oriented toward what matters most on long days: staying comfortable enough to keep going.