Our Nano Flex water-repellent fabric is one of those fabrics that seems miraculous. On a dry day its as warm and breathable as our normal Thermoflex fabric, but when it rains the water just runs off, thanks to the five phase nano techology treatment. While its not 100% waterproof, its the best solution we have ever tried for staying comfortable in any conditions. On a wet day pair the NanoFlex bibshort with our NanoFlex knee or leg warmers for the same level of warmth and protection as you would get with tights.
Buy Castelli NanoFlex Thermal Bib Shorts from Chain Reaction Cycles, the worlds largest online bicycle store
If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or fitted.More information on returns