Made from 160 g/m² Polartec® fleece, the Men’s Alpine Polartec® 100 Pants deliver lightweight breathable comfort with an impressive warmth-to-weight ratio. Whether layering for additional warmth or wearing them on their own, these pants provide all-day comfort and performance. 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.