-10 Degree Outdoor Camping Hiking Cold Winter Envelope Sleeping Bag Duck Down Sleeping Bag 1000 fill Surface material: 400T superfine nylon;Inner material: 400T polyester pongee Filling : 1000g,90% white duck down Standard adult sleeping bag designed for size and weight-conscious hikers Size: 82.6*31inch/210*80cm, Compressed Size:7*15 inch/19*38cm In the wild to prevent moisture or cold air to enter