Castelli Tutto Nano BibknickerThe Castelli Tutto Nano Bibknicker is great in any possible condition thanks to utilizing Castelli's new Nano Flex treatment, which comprises a topical nanotechnology microfilament mechanical water repellent finish combined with a short chain chemical DWR finish for class leading water repellency. The reduced seaming offers improved comfort and fit. The Castelli Tutto Nano Bibknicker uses Castelli's KISS Air2 seat pad which provides you with comfort for long distances, making it ideal for base miles in the wintertime.FEATURESNew Nano Flex 3G fabric is exceptionally warm and soft yet with even better rain protectionReduced seaming for improved comfort and fitMesh bib straps don't hold moistureKISS Air2 seat pad for long-distance comfortReflective leg ending for added visibilityEmbossed logos for durabilitySizingSizeSmallMediumLargeExtra LargeXX-LargeXXX-LargeChest (in)36"37.5"39"41"43"45"Waist (in)31"33"34.5"36.5"38.5"40.5"Hip (in)37"38.5"40"42"44"46"Inseam (in)32.2"32.6"33"33.5"33.8"34.2"CASTELLI SIZING INFOCastelli products are aggressively cut and are meant to fit optimally in the riding position. If you are in-between sizes, you may want to size up as the fit may be very form fitting. If you have questions, please contact our Gear Advisors. | Castelli Tutto Nano Bibknicker Men's Size Small in Black