The Marmot  Warmcube Featherless Hoody men's jacket has a featherless WarmCube ™ hood on the back or in a backpack. The innovative 3D WarmCube design prevents the 3M ™ Thinsulate ™ Featherless and PrimaLoft® Silver Hi-Loft insulation from shifting, while also trapping heat. Pertex Quantum® fabric provides wind protection.