Hello, I purchased a mini skinny on macys . com thinking it would be like the one on coach .com. The coach store has a ID spot outside and space for a debit card. The one I got is the same but the back has no slots or the plastic window for ID. They cost the same amount, but wondering if I missing put the the IiD window. Lol. Now I plan on using it for work to not have to carry my purse. I will connect my keys but not sure if I want want everyone to see my ID. I was thinking of putting a mini instax pic of my son but still unsure. Should I keep the one with nothing on back or get the other one?