Castelli Cross Prerace Jacket. On race days it's crucial to stay warm before you head to the starting line. Castelli's Cross Prerace Jacket delivers ultra warm protection up to the moment you get ready to race. Primaloft insulation on the front and sleeves is bolstered by a Toray water repellant outer layer, so even the meanest, foul race weather won't reach your inner layers. Nanoflex water repellant fleece on the back of the jacket lends additional warmth and insulation, with enough stretch to ensure you can move freely as you warm up. Three external rear pockets and a zippered chest pocket round out this race day essential.