The Mammut Aconcagua ML Half Zip Pull Men is a stretch fleece midlayer designed for active outdoor use. It’s made to deliver moderate insulation on cool days and works equally well under a shell or on its own during hikes, climbs or camp chores.
The stretchy fleece material moves with you on the trail, while the half-zip neckline offers quick ventilation when you start to warm up. A soft inner surface ensures comfort against the skin, and the lightweight build keeps bulk to a minimum so you can layer easily without feeling restricted.