For the storage and storage of down sleeping bags, shrinking is not a good way, because down sleeping bags need to be inhaled. The best way to store down sleeping bags is to choose a spacious and breathable storage bag to keep it in a bulky condition. Down products should not be wet and cold. They should be placed in a dry and naturally ventilated area. After application, they should be exposed to the sun and ventilate as much as possible to maintain the dryness and bulkiness of the outdoor sleeping bag. If such standards are lacking in the suburbs, this procedure must not be omitted after returning home.