rframe
pǝʇɹǝʌuı
I was having lower back pains and someone suggested moving my wallet from my back pocket to a front pocket. He said his doctor told him that he was getting a thick wallet from all of his patients who sat on thick wallets. I did it and it took a while, but the pain went away. Carrying a wallet in front may interfere with the clean cut lines of a person's silhouette, but at my age, Mother Nature already did enough damage that it doesn't matter.
My chiropractor told me the same thing. I quit carrying my wallet in my pocket years ago... I just carry it in my hand (like the worlds smallest man-purse) or in a jacket pocket or in a backpack or attache. Now on the rare occasion that I stick it in my back pocket temporarily it feels ridiculous. Can't imagine doing that again as a regular way to carry it.