Marmot Olden Polartec 1/2-Zip Top - Men's Red Sun, M

Between layers on frosty tours and treks, you'll find us wearing this fleece for additional warmth. Even when we're working hard, this half-zip top breathes and wicks moisture so our perspiration doesn't freeze when a chill rolls in. Other features like its stretchy construction and wind flap ensure we've picked a great midlayer for our active winter pursuits.