Hyalite Down Jacket - Product Features Cut: Standard cut; comfortable and easy fit.; Insulation: 550 fill goose down; responsibly sourced and Responsible Down Standard (RDS) certified.; Fabric: Body: 30D 45 g/m², 100% nylon with water-resistant (DWR) coating.; Measurements: Medium Back Length: 52.07 cm.; Pocket Features: Zippered pockets allow you to safely carry your phone and other items.; Warning: Fine feathers are used in high-quality goose down jackets, so feathers may come out and shed from the outer layer or lining.; This jacket is an ideal choice for staying warm in the mountains in winter and providing comfort on nature walks.