If I'm understanding this right, you wouldn't want to reuse the actual "pocket" part of your diaper without washing between uses (Even though it isn't absorbent, it still gets peed and pooed on!). If they are pocket diapers, each time you use one you would use the pocket part (the part that looks like a diaper) and stuff an insert inside. Therefore, you'd get 18 "uses" out of this stash. I hope that helps (and that I understood the question properly!)!!