Just like the name says, Castelli wanted to create the ideal simple emergency rain jacket. They made it completely waterproof and compact, and, as you’d expect from Castelli, they also gave it an amazing on-bike fit, yet it’s still roomy enough to fit over a Gabba. This jacket is an emergency piece, so Castelli knew you wouldn’t want to break the bank with it, but the only real compromise compared to the top-of-the-line offerings is in breathability. They didn’t make this for an all-day rain ride, but it’s just right for your next emergency.