The Alpha Mid Weight Jacket is made from versatile high-loft fleece that aims to minimize excess heat and moisture vapor in order to provide active insulation. This means you can run around and sweat in cold or otherwise adverse conditions without worrying about being uncomfortable.
Active mid layer made with Polartec Alpha, the first-ever breathable puffy insulation
Warm, stretchy and breathable, this layer is an adaptable lightweight
Air permeable, high CFM nylon micro-ripstop stretch liner