Assos MILLE GTO Bib Shorts S11 Standard

The pinnacle of Assos endurance comfort. The MILLE GTO S11 sits above the standard MILLE GT — built for riders who spend their longest days in the saddle and want the most cushioned, most cooling, most stable insert Assos makes.

GTO S11 Insert — twin-layer 11 + 10 mm (21 mm total)

Feature: Dual-layer chamois with extra support beneath the ischial bones, attached front and rear via goldenGate 2.0 so it floats with your body.
Pain point: On 5+ hour rides, single-density pads bottom out and pressure points appear under the sit bones.
Real-riding benefit: The 21 mm twin-layer construction absorbs road buzz and big hits without ever feeling bulky in the pedal stroke — this is the chamois you reach for on all-day adventures, gravel epics, and back-to-back century weeks.

kraterCooler + whirlKrater perforations

Strategic perforations across the insert pull cooling air through the pad instead of trapping heat — the difference between a dry, comfortable microclimate and a hot, sweaty one on long climbs in summer.

OSSIDIA + LOSANGA textile system

OSSIDIA wraps the large leg muscles in fatigue-reducing compression. A LOSANGA front panel on the crotch increases airflow and removes pressure where you feel it most — so the shorts disappear under you instead of reminding you they're there.

cranKio Tec hip shaping

Targeted darting at the hips eliminates the bunching that causes hot spots and chafing in the pedal stroke. You stop noticing the shorts after the first hour.

INject leg gripper + zeroPressure waist

Silicone grip is infused into the raw-cut leg opening (no separate band that can roll or chafe). The waist is wide and elastic — no pinching when you're tucked low or eating in the saddle.

rollBar bib strap construction

Race-derived bracing locks the insert in place during sprints, climbs, and hard cornering — the pad stays exactly where you positioned it for the entire ride.

Specifications

• Insert: GTO S11 — twin-layer 11 + 10 mm (21 mm total)
• Series: Endurance
• Fit: regularFit
• Temperature: > +21°C
• Leg length: Standard
• Color: blackSeries
• Composition: Legs 80% PA / 20% EA · Front insert 78% PA / 22% EA · Padding 85% PL / 15% EA
• Made in: Switzerland-designed

GTO vs. GT — which to pick?

The GT (12 mm) is our endurance workhorse. The GTO is the next step up: more pad volume (21 mm twin-layer), more cooling perforations, more advanced bib strap engineering. Choose GTO if you regularly ride 4+ hours, want the most cushioned Assos pad available, or simply demand the brand's flagship comfort.