The Squadra Stretch shell keeps the wind off on cool-weather rides or long descents, while the stretch panels keep the jacket fitting close to body and eliminate flapping fabric. Added panels on the sides and the sleeves in a very high-stretch yet tightly knit fabric that allows them to give the jacket a modern, close-to-body fit for aero gains on any terrain, and it actually keeps more heat in than a jacket that's flapping about.