**New ASSOS Fall/Winter 2026 Collection item | August 2026
This new ASSOS 2026-2027 item is available for purchase and delivery NOW
ASSOS MILLE GT Men's Indoor Bib Shorts S11 are based on the proven endurance bib short platform, adapted and refined for indoor training with an ultralight, ultrabreathable, fast-drying construction.
The regular MILLE GT Bib Shorts S11 are rider favorites for a reason. They’re comfortable, they’re breathable, and they stand up to extended usage. There is one calendar season where they don’t excel, though: Winter. So ASSOS adapted everything that you love about them for indoor training, providing the ultimate endurance bib shorts to see you through the cold months while spinning in-place on a training app. Though they are named “Indoor,” bib shorts these also thrive in the hottest summer conditions – recommend sunscreen under the ultralight leg panels. The construction combines the same textile on the standard GT S11, QUARTZ, with targeted panels of the open-structure POLSTARfabric, used on ASSOS TACTICA liner shorts. The combination of textiles balance long reliability and durability in high contact areas with impossibly lightweight breathability and cooling on the leg panels. The bib straps are also lighter, using a perforated mesh to maximize cooling airflow, and the GT S11 insert situates a breathable, cooling Sundeck section up front, where shock-absorbing support isn’t needed but added airflow is more than welcome.
SPECIFICATIONS
Temperature > +21°C
Insert thickness 12 mm
Fit Regular
Breathability 5/5
Insulation 1/5
Quick drying 5/5
Ride intensity 4/5
Technology | The finer details
FEATURED FABRICS
The QUARTZ textile is a lightweight, breathable warp knit with permanent odorControl – the same used on the standard, proven MILLE GT Bib Shorts S11. The true-black color doesn’t turn white or become transparent while stretching during normal use and 80% of its content is from pre-consumer recycled polyamide. The legs are wrapped in POLSTAR, a bi-stretch, ultrabreathable cooling mesh with a hydrophobic treatment that pushes moisture to the surface and speeds evaporation.
CONSTRUCTION/FIT
Streamlined regularFit and body-contoured shaping reduce seams, eliminating friction for total comfort.
ENGINEERING
//X-Frame: A suspension design originally engineered for the Racing Series. Limits sag on the lower back, stabilizing the insert and main body panels.
//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 in wet or dry conditions.
//zeroPressure Waist: A soft, highly elastic waist construction that improves comfort and hold at the waist, minus any pressure or pinching.
MILLE GT S11:
//Shock-Absorb Damping Mono 12: Compressive foam layers in a 12mm endurance platform. Thermoformed shaping reduces ridges and irritation.
//3D Waffle: A patented, three-layer, perforated foam that increases breathability and eliminates excess weight.
//goldenGate 2.0: A free-floating construction that moves with your body rather than against it. New cut-outs on the wings reduce friction throughout the pedal stroke.