The Men’s Marmot Isotherm Hoody - In outerwear’s natural selection, Marmots award-winning Isotherm Hoody is evolution at its best. Ideal for active insulation – necessary for ice climbing or backcountry skiing – the state-of-the-art Polartec Alpha insulation cuts the need for impervious fabric faces. Rather, Marmot used an abrasion-resistant Pertex Quantum face and lined the hoody with hyper breathable mesh. Reinforced softshell shoulders, an attached hood and a free-moving fit – it’s a new species of light, warm of breathable. The Men’s Marmot Isotherm Hoody is an exceptional jacket for ice climbing, backcountry skiing and summit tagging.