A good layering system is the most tried-and-true method to staying out on the mountain longer, and the midlayer is the most critical piece. The Polar Fleece 1/2 Zip's kangaroo pouch is like a reliable friend, and it looks really cute when you take off your jacket.
220g Polar Fleece, Flat Rip Taffeta Panels, 100% Polyester, Standard Fit