Castelli Rain Waterproof Jacket. This breathable and waterproof jacket has a 3-layer laminate to help it stay waterproof, with reflective piping and screen printing to keep a rider visible and dry on rainy rides. An MP3 pocket with internal cable port keeps your electronics dry too. Buy this Jacket and you can Save £66.00 on Castelli Rain Waterproof Jacket Now £154.00.