Try two smaller wallets carried one each in the front pockets instead of the rear. It will save back strain and pain. When you sit on a large billfold pressure is placed on your sciatic nerves and muscles. Many back problems have been related to this practice.

There is another advantage to carrying two small billfolds in your front pockets. The first wallet keeps your credit cards, important stuff and some cash. The other has some cash you don’t mind "donating" New York Style to muggers.