This is a great wallet if you normally keep a lot of stuff in it, but need to have a slimmer profile sometimes.  I use the removable ID case when I am in office attire, as I'm a front pocket guy and the larger wallet looks silly sticking out in my the pocket of my slacks.  Once I started using the more minimalist ID case, I found I can truly live without the rest of the wallet.  In hindsight what I needed was an ID case with room for 4-5 extra cards.  For me it's check card, credit card, health card (dental can go with it being that they are slim enough), gym card and the magnetic security card to get into my building. Cash go just go in the pocket.  Keep it with your wallet when you take it out of your pants and there is really no need to keep it "inside" the wallet.  Not for everyone but the minimalist thing really works better for me. Having the rest of the wallet for trips or when I need to haul more cards or cash around is nice option though, so I'm happy with the whole package.