Castelli's Pave Bibtights let you ride when the weather's trying to keep you inside. They feature Castelli's warm Thermoflex fabric that's coated with millions of tiny silicone nanofilaments for serious water resistance. In fact, water beads up and slides off the fabric without a trace. The nanofilaments also trap a layer of air between them for excellent insulation and prevent water from soaking through to the fabric underneath. These sweet tights also feature Castelli's awesome Kiss3 chamois and uber-comfy Giro++ bib straps, and chafe-free flat-lock stitching. You also get reflective ankle zips for safety.