The Aria Shell Bike Jacket from Castelli is an extremely lightweight and packable wind jacket that fits close to the body and is equipped with breathable stretch inserts that extend the temperature range of your favorite Castelli jersey.

Stretchy mesh material on the sides and back of the sleeves prevents flapping in the wind. The ultra-light, windproof microfiber fabric on the front protects you from the wind. The Aria Shell jacket is warm enough to wear the whole ride in mild conditions, but when you want to take it off, it can be stowed away in its own pocket or your beanbag to save space. And best of all, it fits like a second skin!

Fabrics:  
Main fabric: 100 % polyamide
Hip, Inner collar, Lower sleeve: 94 % polyester, 6 % elastane