Men's Aconcagua ML Jacket 26/27

The Aconcagua ML Jacket is Mammut's classic fleece, now in its third generation. It is made from Polartec Power Stretch Pro with a super-abrasion-proof nylon surface and 4-way stretch that keeps you warm, wicks moisture and dries quickly. It weighs 367 g.

The trade-off is its tight athletic fit. That is what makes it such a good mid layer under a hardshell, but if you want a relaxed, roomy fleece for lounging, a looser cut will feel more casual.

It is for anyone who wants one rugged, stretchy mid layer for ski touring, climbing, hiking and everyday wear. Mammut describes it as tough enough for expeditions and good-looking enough for town.

Athletic fit with raglan sleeves to avoid pressure points at the shoulders, a high, snug collar with a flat chin guard, thumb loops and two backpack-compatible side zip pockets.

We think the Aconcagua is one of those pieces you will wear constantly, and it keeps its shape season after season.