Castelli has engineered an extremely high amount of protection into a minimum-sized package. Using a 30 g/m2 water-repellent and windproof fabric, they've created a jacket that disappears into half a jersey pocket when not in use, yet provides wind and rain protection when needed. Fit is predictably Castelli: close to body to minimize flapping fabrics. Serious equipment for unpredictable conditions.

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• ForceField micro ripstop fabric is fully windproof and offers DWR rain protection
• Mesh-lined collar becomes stuff sack
• Reflective Castelli wordmark logo
• Reflective back tabs
• Cut long for lower-body splash protection