These shoes loosen up right away and are a little longer than other shoes of the same size, so you may need heel pads. But  don't want to go down a size or you may not have enough room for your toes. If you pronate or otherwise need supportive shoes and an arch, these are not for you! They are only fabric (think moccasin), and I collapsed them immediately. The fabric gives way and gaps at the side. Memory foam is great for comfort under the foot, but because I pronate, all it retains is the memory of my foot rolling over. They became rather expensive slippers after the first day I wore them.