Obert Double People Envelope Sleeping Bags 1800g White Duck Down Waterproof Camping Hiking Adult 220cm*130cmShell Material: 400T waterproof nylon Lining Material: 320T polyester pongee Mattress Size: For Double People Open Size: 220cm*130cm Features: Water-resistant Insulation Type: Down White Duck Down Weight: 1800g Total Sleeping Bag Weight: 2700..