I just received them today but my initial reaction is that they fit (which was my primary concern because I am between two sizes and they only had the smaller size in stock) and when they say memory foam they are not kidding they are more plush than my house slippers.  So much is the memory foam base that it actually contours into the shoe...I am guessing that's why some reviews say it feels tight at first and then not once your foot sinks into the shoe.  So far I actually have no tightness but I'm thinking the difference for me is that I have a very narrow foot, so the more extra padding in a shoe...the better it fits me. Also the first thing I noticed on the pink and purple pair is that it is much brighter in person than on my computer screen.  On my computer screen it looks like somewhere between an average pink and a pale coral, whereas in person it is definitely a hot pink...it will definitely change what I can wear them with (outside of working out).  All in all, pink and purple are my fav colors and I can't stand to return them, even if the color is unexpected, still in love.