Patagonia Houdini Jacket

iRunFar Best Windbreaker Jacket and OutdoorGearLab top women's running jacket for wind protection. Weighs just 3.4 oz and packs into its own chest pocket; ripstop nylon with PFC-free DWR coating blocks wind and light rain. iRunFar's cold-weather gear guide calls it the go-to just-in-case layer for cold mountain runs.