Back panel venting keeps you comfortable while maintaining wind protection. The Zephyrunner strikes a perfect balance of wind-breaking breathability with a CFM rating of 16 engineered specifically for running + high-activity output activity. Hyperlight, durable nylon shell is water-resistant and wind-blocking for whatever the trail may bring. Stows into chest pocket for easy packability. Bungee hem and hood toggle allow for an adjustable fit on the fly, reducing exposure in windy conditions. 2 zip hand pockets and a zip chest pocket stash small essentials close at hand. Signature reflective logos for improved visibility in low light.