The Patagonia Houdini Jacket - Women's is an ultralight shell for weather-resistance during trail runs and hikes. When moving fast is the name of the game, this shell is packable and light for the outdoors. It's 100% recycled nylon, and comes in at 3.4 ounces. Pack it into the left-chest pocket and clip it to a belt with a carabiner, or stuff it into a pocket. It cuts the wind and the durable water repellent finish sheds light rain. Just enough for changes in weather, without causing overheating while pushing hard along the trails.