Contour diapers work great with covers that can be laid out and folded up around baby, how disposables go on.Contour diapers do not work with a pull on style cover.They are an inexpensive and easy set up for around home.You simply lay the diaper and insert, if you like to use one, in the cover and fold up and fasten the cover around baby; the diaper itself does not need to be fastened.One draw back is the diaper itself will not contain poop very well but your cover should so you don’t have to worry about leaks but will have to wash the cover after baby poops.Again it kind of depends on how often your baby needs changing.You should have about 15 contour diapers with about 4 covers.