If you are going to stay warm during a late-season cross race, you need to layer with the Louis Garneau SF-2 Plastron Long-Sleeve Baselayer. Designed using Garneau’s Light WindDry 2 material, the front of the SF-2 Plastron features a wind- and water-stopping polyurethane membrane, and the back uses ultralight moisture-wicking material to expel excess heat and moisture. The ergonomic cut keeps the SF-2 Plastron from shifting in flight, and it won’t bunch up when hammering from the drops.