The Men's Alpine Polartec 100 1/2-Zip Jacket checks all the boxes for the perfect cold-weather mid layer. Made from lightweight and breathable 160 g/m2 Polartec fleece, this jacket is designed with an impressive warmth-to-weight ratio. It can easily be layered under a ski shell, rain jacket or work as a stand-alone piece. As one of our Circular Design Styles, solid color options are made from sustainably-conscious materials and recyclable when you get it back to us.