I needed a small sized insert.  I was able to fit everything in...but with a bit of a struggle. It's very tight.  I bought it to go inside a small/regular sized Coach bag so it's doing it job by helping me organize...but also maybe I shouldn't have chosen black because it's a bit hard to see in there!  I am able to work with it by putting some things on the sides OUTSIDE of the organizer.  I'm mostly not happy with my wallet being such a tight fit.  I have one of those rectangular wallets.  Oh well!  Will do with it for now!