I used to use the Shinjimoru phone case and loved the option to forego my.wallet. When it came time to change my case because I needed something more protective, I put my wallet on and felt like I had my old Shinjimoru wallet case back. It sticks well to my new case. I haven't tried removing it or moving it to a new case, but at this price I'd probably get a new one if I had to change my case. It contains 4 credit cards, a driver's license and a gym card (which is about 2 credit cards thick).