Sometimes the best jacket is also the least jacket. What makes a windbreaker great is when it combines ultra-lightweight construction so it can pack in a pocket with no fuss, a form-fitting cut to keep it from flapping, and a material that can repel water and yet remain breathable. And this, is precisely what makes the Castelli Leggera Women's Jacket such a find.

The Leggera Jacket is constructed from Castelli's Forcefield fabric, which weighs only 35 grams per square meter. Butterflies weigh more. It even comes with its own stuff sack, making it as easy to take with you as your cell phone and just as silly to forget.

The zipper is typically the Achilles heel of a lightweight jacket; a stiff, heavy zipper can make even the best jacket difficult to stuff in a pocket. Fortunately, the Leggera's zipper is both light and flexible. The jacket also features a mesh lined, high-cut collar to keep it from sticking uncomfortably to your neck in damp conditions.