⦁ Please keep your backpack in a dry and ventilated place ⦁ After using the bag, in order to prevent dust or deformation, it is better to use a Bag cover, when not in use. Put some old newspapers in the bag to prevent deformation ⦁ Avoid frequent repeated cleaning, dirt and soiling can be wiped with a wet towel. Do not soak in hot water; The Cleaning process is best if washed by hand, with mild detergent; Do not rub hard in cleaning process, also do not wring dry. Dry in a dark to avoid fading. ⦁ Our products are made with waterproof fabric, but it doesn't mean that you can completely soak your bag in water without being affected. Some moisture can pass through the zippers.