Castelli's 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.

• Ultralight windproof woven microfiber front
• Striped mesh back is stretchy to avoid fabric flapping in the wind
• Folds up extremely small
• Rear pocket
• YKK® Vislon ® zipper
• Reflective piping