The MILLE GTS S11 is Assos’ endurance bib short for riders who measure their days in hours, not miles. The new version keeps the stability and compression the GTS line is known for but adds more comfort at the waist and the leg openings. It also gets an ultra-matte finish and noticeably better airflow through the insert.

The biggest update is the rollBar support system, borrowed from the S9 race platform. It locks the shorts in place vertically without squeezing the stomach, which lets the waistband open up and breathe but still feel secure. Coverage across the lower back and stomach is increased, so the bibs stay put when you rotate forward into an aggressive position.

The butterfly-wrap paneling remains. That’s what gives these shorts their even, fatigue-reducing compression without feeling restrictive. The new GTS insert is a two-layer, 13 mm design with significantly more cooling airflow and targeted support where you actually need it. It’s the kind of bib short you can wear all day and forget about.