Need a packable wind shell that blocks out the wind without you overheating on the bike? Try the Castelli Aria Vest - it's light and doesn't flap about in the wind.
Castelli Aria Vest (M) — "Color: Dark Gray","Size: XXL"
Description
Castellis lightest and most packable wind shell that fits close to body with a stretch breathable back. It effectively blocks wind on the front without causing overheating.
FEATURES
Ultralight windproof woven microfiber front
Striped mesh back is stretchy to avoid fabric flapping in the wind