I purchased these slippers to replace a pair of worn out Dearfoams in a similar style. They are comfortable and soft, but provide no real support. Occasionally the soles of my feet will ache if I have worn them around the house for several hours. This is not a failure of the shoe, but rather because I am flat footed. I would love a better footbed in the Dearfoams but I can't expect that at this low price. I do love that they are machine washable. I'm pretty sure I will purchase another pair when these wear out. I wear a size 11 shoe, and the X-Large in Dearfoams fits me perfectly. Not sure if they would fit a size 12 foot.