NANO RAIN BIBTIGHT

Nano Flex has always stood for innovation at Castelli. It earned its reputation by delivering water protection that worked rain or shine. But the reality is clear: in a PFAS-free world, that type of all-conditions treatment is no longer possible. So we reset. With Nano Flex EVO, we didn’t try to recreate the past. Instead, we engineered something purpose-built: a true wet-weather bibtight designed exclusively for riding in the rain. The Nano Rain Bibtight is for those hardcore riders who never skip the ride when conditions turn bad. When roads are soaked, temperatures are low, and staying dry matters more than versatility. It uses tightly knitted polypropylene fabric with a PFAS-free C0 DWR, that naturally resists water absorption while delivering exceptional warmth. This construction creates a protective barrier that still protects when the weather is at its worst. To support this focused performance, the bibtight features a reduced seam construction, a raw-cut ankle for less bulk when pairing with a shoecover and integrated reflective tape with the Nano Flex EVO logo for added visibility. This is not a “rain or shine” bibtight. It is a rain-only tool, and it requires care to perform at its best. After each wet ride, wash the tight. While still wet after washing, apply a water-repellent reproofer spray generously, then allow it to dry for 24 hours. Once dry, store it until the next rainy day. When conditions are foul and the ride still goes ahead, the Nano Rain Bibtight is the piece you trust—purpose-built, uncompromising, and ready for the worst weather you’re willing to ride in.