Castelli Aria

An extremely lightweight and packable windshell that fits snugly to the body, featuring breathable stretch inserts that expand the temperature range of your favorite Castelli pieces. This jacket is an incredibly light layer that keeps the wind off the front of your body while providing ample breathability through the mesh inserts on the sides. But what you will truly appreciate is how the stretch inserts on the sides and the back of the sleeves allow this jacket to fit like a second skin: no flapping fabric, no cold air circulating inside the jacket, and no appearance reminiscent of the Armstrong era. The jacket is light and warm enough to wear throughout your ride in mild conditions, but if you want to take it off, it can be folded into a side pocket and stored in a compact space in your bag or seat pack.