OMG!!! These slippers are the BEST!!!  I've had them for at least 2 years now.  I can walk on the back of them if I am just to lazy to bend down and pull the backs up or not.  The backs come snapping back every time.  Now you do have to pull the back up but when you do they stand right up like they did when they were new!  I've thrown them in the washer and drier and they come back just great!  I even bought a 2nd pair because I loved the first pair so much.  Hmmmm one little thing though.  The second pair that I bought...well I've used the first pair for so long and they have given me such great service and are still looking and feeling great that aahhh, I can't find the second pair anywhere in the house!  I know their here though.  I'll say a pray to St. Anthony and I will find them.  In the meantime, I will keep using this first pair that is giving me such great service!!