Stretchable, wind and waterproof fabric with a bio-based polyamide membrane made from castor oil Taped shoulder seams keep water out during wet and rainy rides Waterproof zipper pocket on the back and a zippered opening for easy access to the jersey pockets YKK zipper with QuickFree® technology allows the rider to open the jacket without pulling down the slider Elastic hem with reflective threads for 360° visibility all day