**New ASSOS Fall/Winter 2026 Collection item | ETA mid-October 2026
The ASSOS MILLE GTS STURMPRINZ Rain Jacket S11 is a waterproof, windproof cycling jacket, engineered to the specifications of WorldTour pro team athletes who race and train in the most challenging conditions.
The original STURMPRINZ was a legend for amateurs and pros alike, a shell jacket that didn’t compromise on weight, protection, or breathability. The new GTS STURMPRINZ S11 proves that legends never die. The impossible breathability of ATLANTIS, a 3L membrane, belies its waterproof and windproof properties. The textile is situated across the front panel, the sides, over the shoulders, and on the leading edge of the sleeves, cutting through rain, wind, and frigid air alike. ATLANTIS is more than equal to typical road spray and wind, but it’s at its best during high-intensity riding in frigid, rainy conditions. You stay warm, the rain stays out, and the hyper-breathability means you stay dry from the inside, too.ATLANTIS is supplemented with CORE Light softshell on the rear-facing panels of the body and the sleeves, and the hem and cuffs are an ultra-elastic coated material that creates a watertight seal, even when layering over gloves or thermal midlayers. Taped seams ensure complete protection across the entire construction, and the vent across the back is engineered to open in upright positions, expelling excess heat while you’re in a climbing posture on the bike.
SPECIFICATIONS
Temperature -8 / +20°C
Riding conditions Rain
Fit Regular
Breathability 3/5
Insulation 2/5
Quick drying 3/5
Packability 3/5
ASSOS CLIMACODE 2.3 SPRING/FALL - color code yellow
Technology overview | The finer details
FEATURED FABRICS
With a rating of 42,900 g/m²/24h, the main textile, ATLANTIS, is impossibly breathable for a 3L hardshell. It’s also proof against rain, road spray, and windchill, performing at its best when you’re riding full gas and conditions are at their worst. The rear-facing panels of CORE Light softshell maintain 360-degree protection and breathability, and the AVANTGARDE hems and cuffs are ultra-elastic and coated for a perfect seal against the elements. All materials are PFAS free.
CONSTRUCTION/FIT
Situated between a pure endurance fit and a second-skin racingFit, the GTS regularFit is the most streamlined MILLE silhouette, providing aerodynamics with long-distance comfort. Fully taped seams eliminate any gaps in protection.
ENGINEERING
//airVents: A smart ventilation system that opens to expel excess heat while in an upright position for climbing.
//fastClosure: A double-zip construction that allows ventilation from top or bottom. An auto-alignment design guides the sliders into engagement for operation with gloves or in inclement weather conditions.
//Reflective Detailing: Reflective elements increase visibility in the low-light, overcast conditions when wind and rain protection are most valuable.