The Idro Pro Jacket set an extremely high standard for Castelli's performance waterproof, breathable, light, packable, and pricey- cycling jackets, but in general, you only opted to carry it when you knew it was likely to be wet on your ride. The Idro 2 Jacket can change the way you ride when it could be wet. It’s so small you’ll find yourself stuffing it in your pocket for rides with even a remote chance of rain, just because it takes up so little space- so why not? And you’ll be extending your rides into conditions when rain is in the forecast because you know you’ll be perfectly covered.
Using Gore’s newest ShakeDry™ two-layer fabric, Castelli constructed a truly minimalist jacket that still checks all the boxes, and meets your needs. It fits over your jersey and/or vest. It covers your tail. It has a tall collar. It has a YKK® Vislon® waterproof zipper. It has reflectivity. But that’s about it. Compared to the Idro Pro jacket, this one is made to go in your pocket for every ride, yet still provide the essential protection when called into duty. Yes, it is still pricey, but the truth is you'll get much more use out of it, so in fact it will more than deliver value for your dollars. If you want the best performance, cycling fit, and packability, the Idro 2 Jacket needs a home.