If it is too dirty, use a neutral detergent to clean the backpack and place it in a cool place to air dry, but avoid too long exposure, because ultraviolet rays will damage the nylon cloth. The cleaning process should still pay attention to basic maintenance. If the backpack is scratched, it should be immediately patched. The thicker needle thread is specially designed to sew the chair cushion and must be sewn firmly, and the nylon thread can be broken by fire. The specific method is as follows:
1. Use a small brush to clean the floating soil, suitable for backpacks with only floating dust.
2. Wipe with a soft towel soaked in water, and then dry, suitable for backpacks with ordinary stains (such as mud).
3. Soak in a large basin for a few days, and then rinse repeatedly, suitable for dirty backpacks.
4. Remove the carrying system and use the washing machine, suitable for lazy people with cleanliness.
