The two bags can be used together or separately depending on your needs. the essentials mini bag is an emergency nappy changing station on the go. removable mat included. The tote bag is a particle bag with lined pockets to store bibs, nappies, bottles, soothers, cream etc. the outer hooks allow parents to attach the tote bag to strollers. Chicco 2 in 1 tote bag is a particle and stylish solution for parents made from eco leather