Ultra lightweight(13~17oz.), can fit into a backpack easily, makes the down jacket perfect for outdoor activities like backpacking, hiking, jogging, camping, traveling, riding and extended trips. Filling: 90% down, 650 fill power. 100% Nylon shell fabric is woven into baffles that eliminate the need for thread and stitching, preventing down feathers from coming out. YKK Zipper closure. The down coat could pack into its own left pocket of about 9.4" long and 7.8" wide for easy carrying