Looking for bib short for shoulder season riding that repels and protects while delivering some thermal value? It would need to perfectly complement thermal knee or leg warmers, while still being comfortable enough if you removed them. Given the rough nature of off-season training, this bib short would need a superlative seat pad, great fit, support and incredible breathability. The Mille GTS Spring Fall Bib Shorts are a streamlined regularFit short tuned for the cool and often damp rides of spring or fall. Constructed around the Mille GTS CS insert, its active fabrics are RX EVO light, which provides lightweight insulation with high breathability, and RX EVO, which adds midweight insulation for targeted protection. Both textiles are water-repellent, so precipitation and road spray from mid-ride weather shifts simply bead up and roll off rather than soak through.

Assos engineers the short section using their cozy RX EVO textile across legs and rear panels. This technical fabric offers a mid-weight level of insulation that is ideally suited to cool, but not freezing, weather. The fleecy inner provides heat-trapping warmth. Meanwhile, lighter-weight RX EVO Light over the crotch is brushed inside too but offers excellent breathability, ensuring you're not too hot and sweaty during high-tempo efforts. The outer of the shorts are also treated with a water-repellent finish, adding comfort on damp and drizzly days as water beads on the surface and rolls away.

Balancing comfort, flexibility and streamlined performance, the regularFit is perfect for your longer endurance rides and for more intense training sessions. Ultralight leg grippers see elastic woven through the leg bands, creating a secure hold minus restriction. And with a slightly longer leg than standard, there's more coverage of the thighs, keeping them supple in cool weather. To the upper of the shorts, the Assos X-Frame design has been borrowed from the Equipe RSR summer bibs. This gives full body support for the lower part of the tights and stabilizes the seat pad when you’re pedaling and moving. This leads to improved comfort on longer bike rides. Across the belly the zeroPressure Waist features a superbly soft and highly elastic material with a raw cut edge, giving you a flexible but firm fit without adding pressure or causing pinching.

The Mille GTS C2 Seat Pad features the Shock-Absorb Damping System Twin 13. When you’re on the saddle, 13mm of high-density foam from 2 layers (9mm + 4mm) keeps you comfortable on endurance rides, easing pressure across the sit bones and smoking up lumps and bumps from the road. You’ll also benefit from the 3D Waffle design. This 3-layer perforated foam offers increased breathability and reduced weight too. GoldenGate stitching pattern holds the insert at the front and the back but allows it to float too, moving with your body rather than against it. Lastly, the kraterCooler perforations across the front of the pad allow moisture an easy escape route, maintaining a cool and dry microclimate.