Castelli Nanoflex 2 BibtightYour Secret Weapon.The forecast calls for cooler weather and a good chance of showers, the bottom line is our riding still needs to get done. With wind and rain, these are no conditions for leg warmers. Cue the Nanoflex 2 Bibtights.Castelli constructed the Nanoflex 2 to resist water and provide warmth for the crisp weather ahead. To achieve this, Castelli used their Nanoflex fabric that also has ample stretch as their fabrics and used minimal seams to decrease the chance of water seeping in. The mesh bib strap are designed to lay flat as they offer optimal breathability. At the ankles, you'll find GIRO3 ankle grippers that seal in heat even with shoe covers on. The ankle zippers have reflective tape for added visibility on the road. Castelli pairs the Nanoflex 2 with a KISS Air chamois that features varying densities for all-day comfort as the kilometers tick on.FeaturesNano Flex fabric provides outstanding warmth and stretch with water resistanceMinimal seams for maximum water resistanceKISS Air seat pad for all-day comfortMesh bib straps for breathabilityReflective screen-printed Castelli graphic on both legsGIRO3 ankle grippers lie flat and seal around shoecoverYKK(R) ankle Camlock zippers with reflective tape for high visibilityWeight: 251 gramsSizingSizeSmallMediumLargeExtra LargeXX LargeXXX LargeChest35 1/2-3737-38 1/239-4141-4343-4545-47Waist29 1/2-31 1/231-3333-35 1/235 1/2-37 1/238 1/2-40 1/241-43Hips36 1/2-38 1/238-4040-4242-4444-4646-48Inseam31 1/23232 1/432 3/43334 3/4