MILLE GTO Bib Shorts S11 long

Assos MILLE GTO Bib Shorts S11 long

The MILLE GTO Bib Shorts S11 long are Assos's flagship for endurance comfort, designed for riders who spend long distances in the saddle. The S11 generation refines proven features with a lighter strap construction, a low-friction leg finish technique, and an ultra-plush insert that provides noticeable cooling. The long variant offers +3 cm leg length compared to standard, meeting the needs of taller athletes or fans of longer leg finishes. The main fabric is OSSIDIA, while the front panel uses LOSANGA to reduce pressure in sensitive areas and increase air circulation. The package is rounded out by the stabilising rollBar strap system, cranKio Tec at the hips, and the zeroPressure Waist. Available in blackSeries and in sizes XS to 3XL, ideal for ambitious rides on Swiss Alpine passes as well as in the flat Mittelland. These points are confirmed on the official product page.

• GTO S11 Insert with 21 mm Shock-Absorb Damping System Twin, goldenGate 2.0, kraterCooler, and whirlKrater
• OSSIDIA fabric for silky-smooth compression and low friction
• LOSANGA front panel and kukuPenthouse for cooling and pressure relief
• rollBar strap construction for vertical stability of the insert
• INject leggripper with integrated grip in the fabric, raw-cut leg finishes
• cranKio Tec against wrinkling in the hip area, zeroPressure Waist for pressure-free fit
• Two leg lengths (standard and long +3 cm), sizes XS–3XL, regularFit

Technical Details and Features

The core of the shorts is the new GTO S11 Insert: a dual-layer, 21 mm thick cushioning with additional support under the sit bones that dampens vibrations and delivers long-lasting comfort. The goldenGate 2.0 suspension allows the pad to "float" in a controlled manner, while targeted cutouts minimise lateral friction. kraterCooler air inlets and the distributed whirlKrater perforation promote circulating cooling in the insert. The OSSIDIA main material wraps the large muscle groups with even compression, while LOSANGA in the crotch reduces pressure and increases breathability. Stable fit is ensured by rollBar straps and the INject leggripper, which uses silicone-infused rings in the fabric to provide grip with low friction. The fit follows the regularFit and is designed for long rides; the S11 straps are lighter and increase ventilation. These technologies and material specifications are confirmed by the manufacturer.

Applications and Benefits

The MILLE GTO S11 long show their strengths on long base rides, Alpine crossings, and brevets, where pressure relief, cooling, and stability are crucial. The extended leg finish supports even compression down to just above the knee and can provide additional coverage in changing temperatures. Thanks to rollBar, the insert stays calmly in position even during attacks, out-of-the-saddle sections, and fast descents, reducing friction points. The INject leggripper holds securely – even with sweat or summer heat – without hard edges or traditional silicone bands on the skin. The combination of OSSIDIA compression comfort and LOSANGA ventilation delivers a dry microclimate during long hours in the saddle. Industry reports on the S11 generation emphasise the focus on everyday performance with noticeably higher breathability and stability.

Fit, Sizes, and long Variant (+3 cm)

The shorts follow Assos's regularFit, which prioritises comfort and support over long distances without being as tight as a racing cut. The long variant extends the legs by +3 cm compared to standard, which is particularly interesting for taller riders or for a visually longer silhouette. The size range extends from XS to 3XL, allowing the fit to be fine-tuned for a wide variety of body proportions. Combined with the zeroPressure Waist, the waistband sits softly and securely, even in a deep aero position. The lighter strap construction of the S11 generation increases breathability in the shoulder area – pleasant on hot summer stages or during long climbs. All points mentioned are taken from the official product specifications.

Materials and Care Instructions

For the legs, Assos uses a blended fabric of 80% polyamide and 20% elastane; the front insert consists of 78% polyamide and 22% elastane, the pad of 85% polyester and 15% elastane. This material choice balances compression, elasticity, and durability, while the textured surface reduces friction. We recommend washing on a gentle cycle at 30°C, liquid delicate detergent, a laundry bag, and air drying to maximise the lifespan of foam, straps, and coatings. Avoid fabric softener, as it can impair fibre elasticity and breathability. For frequent riders, it's worth purchasing two pairs to rotate, allowing the material and chamois to dry completely between rides. The stated material compositions are from the manufacturer's specifications.