The Glacier is a truly premium puffer jacket for the depths of winter. The insulation is made up of a 320gm RDS certified down / Primaloft Silver blend, with 650 fill power. This fill creates massive heat-trapping space within the baffles and offers the best of both worlds that come with down and synthetic insulation. Pertex Quantum Eco 50D outer fabric is extremely light and tough for maximum breathability and packability. Premium features including YKK zips, TunnelTech hood, zippered handwarmer pockets, internal mesh pocket, dual cuff system and PFC free DWR make the Glacier a premium puffer for both Alpine hunting expeditions and winter commutes.