1) after the use of the best in the sun before collection.
2) usually do not have to do not install in the compression bag, the best is hanging in the wardrobe, but also need to be timed to bask in a sun, sterilization, use the time and then into the compression bag.
3) you can buy a sleeping bag liner or make your own, and use it to cover the inside of the sleeping bag. It is not easy to dirty the sleeping bag.
4) about the cleaning of the cotton sleeping bag: turn the inside material of the sleeping bag to the outside and paste the magic button, so as to avoid hanging the wool of the sleeping bag fabric. It is ok to use neutral detergent. Finally, rinse it with water and rinse it several times. Don't wash your sleeping bag often, just hang it in the sun after going out.
5) down sleeping bags cannot be dry-cleaned, which will damage the warmth of down. Down sleeping bags are recommended to use a sleeping bag liner to reduce the number of washes. If dirty, can use special cleaner to treat dirty part.