CHANODUG FX-8309 Camping Warm Envelop Style Sleeping Bag(Green)1. 240T polar fleece fabric, filled with hollow cotton, comfortable fabric, strong thermal insulation function 2. Widening and lengthening design, suitable for people of all shapes and sizes 3. U shaped design head, with better heat preservation and windproof effect 4. The outer layer of the sleeping bag is pasted, which can be quickly adjusted and fixed, and can also prevent the zipper from being accidentally opened 5. With double zipper, you can