Large Capacity: diaper bag backpack dimension is 16.5'' x 8'' x 12'' inch with 19 different types of pockets to store mother’s and baby’s items: tissue, water bottle, milk bottle, spoon, keys, mobile phone, wallet, clothing, diapers or even baby’s soiled pants. The front pocket of the backpack is equipped with aluminum foil, which can keep the bottle warm, so you don’t have to worry about your baby getting cold milk powder.