Assos Mille GTS Bib Shorts S11

The Assos Mille GTS S11 is a highly versatile endurance workhorse, engineered for dedicated distance training, high-mileage club rides, and weekend touring. Symmetrical in its approach to performance and comfort, it is the ideal choice for riders who want premium insert technology without the aggressive, painted-on compression of a pure race short. It is tailored in the signature Assos regularFit, which strikes a perfect balance by offering a clean, aerodynamic profile that yields extra breathing room at the waist and thigh openings. Compared to the hyper-plush GTO, the Mille GTS provides a slightly lower-profile, dual-layer chamois that still absorbs massive road chatter, making it the definitive daily-driver for the serious endurance cyclist.

Assos use Volkano, a proprietary textile that faces in with silky-smooth compression and faces out with abrasion resistance, UPF 50+, and a rich, matte black color. Mineral Tec incorporated into the yarns grants permanent odorControl.

CONSTRUCTION/FIT
Situated between a pure endurance fit and a second-skin racingFit, the GTS regularFit is our most streamlined MILLE silhouette, providing aerodynamics with long-distance comfort. Available in two leg lengths: standard and long (+3cm).

ENGINEERING

rollBar: A patented bracing design adapted from the Racing Series. Stabilizes the insert and locks it in place as your weight transfers while sprinting, climbing, and cornering.

PILtec Plug-In: A lightweight, ultrabreathable textile band across the leg opening. The microdot silicone treatment is invisible from the outside but stabilizes fit and maintains grip while wet.

zeroPressure Waist: A soft, highly elastic waist construction that improves comfort and hold at the waist, minus any pressure or pinching.

GTS S11 InsertBr>Shock-Absorb Damping System Twin: A dual-layer, 13mm construction of fast-drying, high-density foam materials in an endurance cycling platform. One layer absorbs shocks, the other damps micro-vibrations.

3D Waffle: A patented, three-layer, perforated foam that increases breathability and eliminates excess weight.

kraterCooler: Perforations in the inserts' leading edge draw intercooling air to maintain breathability and a dry, cool microclimate.

whirlKrater: Perforations strategically distributed throughout the insert, creating a whirlwind of cooling airflow instead of just a unidirectional breeze.

Specification

Volkano fabric provides a silky-smooth, abrasion-resistant texture with body-stabilizing compression Shock-Absorb Damping System Twin provides a dual-layer 13mm high-density foam insert for plush vibration damping rollBar external bracing system stabilizes the insert, locking it into place during out-of-the-saddle climbing and cornering goldenGate 2.0 floating design allows the chamois to move seamlessly with the pedal stroke, drastically reducing friction kukuPenthouse ultra-soft front panel delivers direct air cooling and eliminates pressure in aggressive positions zeroPressure waist construction reduces abdominal restriction for a highly comfortable, pinch-free fit Advanced airflow tech includes 3D Waffle, kraterCooler, and whirlKrater ventilation to keep the rider dry Fabric incorporates high-performance odor-control properties and UPF 50+ UV protection

Guide to fit and Assos Bib Short range

ASSOS bib shorts are engineered with different riding styles in mind, so choosing the correct range can help improve comfort, performance, and fit from your very first ride. EQUIPE R & EQUIPE RS The EQUIPE range is designed for performance road riding, fast training, and racing. These bib shorts feature a close-fitting, compressive “second-skin” race fit intended to reduce movement, improve aerodynamics, and deliver maximum stability when riding in an aggressive position on the bike. MILLE GT & MILLE GTS The MILLE range is built for endurance riding and all-day comfort. Compared to EQUIPE, the fit is standard with additional comfort-focused features designed for longer rides and a less aggressive riding position. TACTICA The TACTICA range is developed for gravel, adventure, and off-road riding the fit is standard and similar to the Mille. These bib shorts balance long-distance comfort, durability, and stability for mixed terrain and extended days in the saddle. Important Fit Advice ASSOS bib shorts are anatomically designed to fit best while in the riding position, not when standing upright. When trying them on at home, the shoulder straps may feel firm and the insert (pad) may feel slightly higher or more noticeable than regular shorts. This is completely normal and is intentional within the ASSOS design philosophy. Once seated on the bike, the bib straps relax into position and the insert is designed to sit flat against the body to eliminate movement, friction, and discomfort while riding. For the best fit, the bib shorts should feel supportive and secure without excessive looseness, bunching, or fabric movement when in a riding position.