Stone Glacier Men's Grumman Down Hunting Jacket - Built with a Pertex Quantum shell and insulated with HyperDRY 850+ Fill Power DWR-treated goose down, it remains one of the lightest and most technically advanced down hunting jackets available. Weight - 385g (L); 15 Denier Pertex Quantum shell; 850+ fill power goose down; 150g of insulation; 90% down clusters and 10% small feathers HyperDRY DWR treated down; 100% Traceable RDS certified down; Articulated hood; Streamline internal cuff; Elastic waist hem; YKK zippers; Internal pocket doubles as a stuff sack; Style: 20025;