Running on cold winter days when the north wind is howling can either be a miserable battle with the elements or an invigorating experience. Make sure that your experience is nothing but positive by throwing on the Zeroweight Windproof Reflect Warm jacket before leaving the house. The secret is the innovative Zeroweight technology that provides superior warmth-to-weight ratio with 30% better breathability. Advanced Body Mapping uses ergonomic engineering to add warmth and breathability where they are needed most. An athletic fit makes it an effective outer layer that doesn't restrict movement. Reflective details provide ultimate visibility to ensure you are seen by other road and trail users.