How to clean the backpack when it is dirty? It depends on what kind of material the backpack is made of. If it’s made of nylon or polyester, it can be washed in a small range, but the whole body washing will speed up the corrosion of other parts such as the webbing, so it’s recommended to dry clean a large range of stains with chemicals.
If it’s a PU leather backpack, it can be cleaned with a handkerchief. Some stubborn stains need to be wiped off with chemicals.
If it is a leather backpack, it needs to be cleaned with a special leather cleaner. After wiping off the stains, it also needs to apply some leather protective oil to protect the leather.