Keep the wind where it belongs. This innershell is a highly breathable mid-layer that resists wind, and adds significant warmth and comfort in a nano-tiny package. The diagonal zipper allows you to easily reach into a shirt pocket without removal. Fleece lined collar for extra comfort. Made of ripstop fabric that’s strong, yet light as a feather. Comes with its own 2.25”x5” stuff sack. Functional and looks cool. 3 oz. Black. M–XXL.