What Our Gearhead(R) Experts Are Saying:"I bring this anytime weight and packability matter. It's shockingly light but still handles real rain, and the full zip makes it easy to throw on mid-run. It lives in my vest for long days when storms are possible but ounces matter."When speed, distance, and changing weather define the day, we count on the Phantom Jacket to keep us moving. Designed by Rab for ultra running and long mountain efforts, this barely-there shell delivers reliable waterproof protection without slowing us down or weighing us down. The 7D Pertex(R) Shield fabric deflects serious rain while maintaining impressive breathability for high-output movement. A streamlined feature set keeps bulk to an absolute minimum, yet still includes essentials like a full-length zip, articulated elbows, and a ventilated hood that rolls away neatly when skies clear. Packing down into its own hood to palm-size dimensions, this is the emergency shell we never leave behind-ready for sudden storms on exposed ridgelines or long miles between resupply points.