FIND THE BALANCE OF WIND PROTECTION AND BREATHABILITY WHILE WEARING THE PATAGONIA AIRSHED PULLOVERRunner and high output athletes rave about this pullover. Finding the best balance of breathability and wind protection it vents perfectly. nylon ripstop featured on the jacket is strong and flexible, adhering to the body to improve fit. FEATURESZippered chest pocket converts to stuff sack with a reinforced carabiner clip-in loopQuarter-zip allows for ventingReflective logo on left chest and center back at neckStretch knit at cuffs and hem keeps out weather, dries fast and wears softly under gloves or a packTECH SPECSBody: 1.3-oz 20-denier 100% nylon mechanical stretch ripstop with a DWR (durable water repellent) finish.