When Castelli redesigned its windproof vest and jacket they realized that we needed a light layer which will protect us from the wind and will not make us catch the wind like a sail. The Aria vest combines a windproof front panel and an elastic mesh back which holds the vest close to the body helping us look just as stylish in it like when we travel alone. This is the perfect vest that you can take with you on a trip to keep warm on the descent. We barely notice its 60g in our pocket while climbing and We certainly appreciate the protection from the wind on the way back to the cafe.