The castelli gabba 20 short sleeve jersey is the result of a collaboration between cycle wear giant castelli and cervelo test team rider gabriel rasch to produce the ultimate racing jersey rasch wanted to create something he felt all racers needed and that was a jersey that protects from the wind and rain but also feels as light as your dry racing gear this concept was brought to life by the windstopper x light plus fabric which provides near perfect wind and water protection don39t be f