Castelli Perfetto Light Short Sleeve Medium Yellow FluoCastelli Perfetto Light Short Sleeve is here to bring you a wind resistant yet, breathable jersey you can depend on to keep you warm, without overheating. The Gore Windstopper 150 fabric on the front, sleeves, and yoke resists wind while allowing extra hot air to pass through. The Nano Light fabric on the back resists water while allowing hot air to escape before it gets trapped. The traditional three back pockets are perfect for snacks for the ride. The tail is long and reflective to help with rear wheel splatter and increases your nighttime visibility. The full length YKK Vislon zipper allows you a rush of ventilation when you need it most. Available in Black, Red, Yellow Fluo, Sprint Green, and Drive Blue.8055688217099