The Men's Patagonia Houdini Stash 1/2-Zip Pullover is a featherweight recycled nylon ripstop with a durable water repellent finish to resist light moisture. Two side pockets with hook-and-loop closures are large enough to hold a phone and other small items on the go, plus the jacket stuffs into either pocket. To promote airflow, there are overlapping slits on the left and right chest and a slit on the center back, and a zipper garage provides chafe-free comfort and a half-zip pullover with a regular fit.