Castelli Idro Pro 2 jacket review

Castelli's Idro Pro 2 is a Shakedry jacket that’s small and light enough to pack in a jersey pocket but warm enough to get you through a serious storm, with pockets for extra points

Castelli Idro Pro 2
(Image: © Josh Ross)

Cyclingnews Verdict

Put your hands on the Castelli Idro Pro 2 and you might think it's a typical emergency jacket. Instead, it's more of an all-day jacket that happens to have the option of packing away. It's warmer and more capable than you'd expect and it's also a hard shell with usable pockets

Pros

  • +

    Large easy-to-use zipper

  • +

    External pockets

  • +

    Soft interior on the collar

Cons

  • -

    No double action zipper

  • -

    Minimal stretch means you need to get the fit perfect

You can trust Cyclingnews Our experts spend countless hours testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

When it comes to rain jackets for cycling there's a ton of so-called emergency jackets out there. They are inexpensive, lightweight, and they pack up so small you can bring them along as a just-in-case backup. They are also inherently full of trade-offs. The whole concept is to give up everything you can in service to making the garment lighter and more packable. Then a few years ago a new fabric came on the market and changed everything. 

The fabric is Shakedry from Gore-Tex. Shakedry reduces the layers of a Gore-Tex garment by eliminating any facing layer and allowing the Gore-Tex membrane to stand on its own. Armed with this new fabric technology Castelli has put together something new, the Idro jacket. We've been testing the Castelli Idro Pro 2 jacket - the second iteration of the Idro line. A third also exists, but the Idro Pro 2 is still widely produced. 

Josh Ross

Josh hails from the Pacific Northwest of the United States but would prefer riding through the desert than the rain. He will happily talk for hours about the minutiae of cycling tech but also has an understanding that most people just want things to work. He is a road cyclist at heart and doesn't care much if those roads are paved, dirt, or digital. Although he rarely races, if you ask him to ride from sunrise to sunset the answer will be yes. Height: 5'9" Weight: 140 lb. Rides: Salsa Warbird, Cannondale CAAD9, Enve Melee, Look 795 Blade RS, Priority Continuum Onyx