For the right kind of protection on training rides and races in wet, cool weather, a good cycling jacket has to be waterproof, strong and durable yet lightweight. Castelli engineers found the right combination of waterproof, durable and lightweight fabrics that are also exceptionally comfortable. The new Castelli Superleggera Jacket is made with Pertex Quantum, a base fabric with incredibly fine yarns woven into a jacket that is light enough for racing and resilient enough to withstand wear in cool riding weather. A cyclist stays dry and warm in the jacket that is nearly impermeable to wind and water. The jacket fits like a race jacket thanks to the stretchy fabric that can be worn as a second layer but still fits like a first layer—close to body. When the weather dries and warms up, the jacket is easy to pack up and store in your back jersey pocket. The Superleggeras 91 grams of weight wont feel like anything as you accelerate up a mountain climb.