The Patagonia Houdini Stash 1/2 Zip Pullover is a versatile outer layer that's easy to pack and is ideal for providing weather protection during active days. The half zip wind shell is crafted from 100% recycled nylon ripstop that has a PFC-free DWR treatment for any light precipitation, and features front and back slits for enhanced airflow when your run heats up. Perfect for on-the-go protection against changing weather conditions during moderate to high-intensity activities, this jacket can pack down to its zip chest pocket.