The fabric of this bag is Oxford cloth, and the lining is polyester. There are three zippered pockets and a hidden compartment in the bag, which can be partitioned to store items such as mobile phones, wallets, cards, mineral water, tissues, keys, etc. The shoulder straps are adjustable and can be freely adjusted to fit your body shape. The back is designed with a breathable mesh, which is not afraid of stuffiness. The package has a reasonable spatial structure, sufficient capacity, and is lightweight and portable. Suitable for daily outdoor activities such as going out, playing in parks, hiking, traveling, etc.