The castelli espresso 4 jacket isnt hiding behind any facades nor is it claiming to be the most aerodynamic the most waterproof or even the lightest castelli describes it as your go fast in july jacket and thats exactly what it doesthe first step to getting out and riding in breezy rainy climates is to get yourself a jacket that youll be comfortable in so castelli have squeezed every drop of comfort into the espresso 4 gore windstopper x fast fabric has been used to seal out the col