This is my first time purchasing shoes online, as I generally like to try them on before I buy them. I know you can return and buy again, but I try not to go through such hassles, if I can. I normally wear a size 9.5, depending on the shoe manufacturer, so I stuck with that for this purchase. For me, the shoes are very comfortable, more so than I expected, as they have memory foam in the shoe for the sole. Like any other shoe, you have to wear them for a while to break them in. In the case of these shoes, the memory foam has to get used to you! When I first tried them on, I noted how they were very comfortable and they fit just right for me, so I was happy already. My right foot did get slightly tingly while sitting, since the memory foam was still getting used to my feet. It has only been a few weeks, but I have worn them almost everyday to help break them in, and I mainly use them for walking and light activities, but I have stooped down while wearing these and all has been well so far. I have seen some of the negative comments about wear and tear of the shoes, but even when I stoop down, or do anything else that would stretch the shoes a bit to their limits, I don't feel like any part will tear. For the rear of the shoe, I personally generally use my hand/fingers to lift the back as I put my foot into it, so the rear of the shoes have not caved in, as others have pointed out. These may be slip on shoes, but that is just what I do. As for the memory foam, they are contoured for a normal foot, so I am not sure if these would be good shoes for someone who is flat footed, or otherwise have something other than a normal foot, as my foot is on the normal side ( normal ball and contoured foot, like how you see the foot print images). So, if you are flat footed or have some other shape that you notice is uncomfortable while wearing typical shoes, this one might not be for you, but you could give it a try, as memory foam is supposed to adjust to your feet. Like I said before, one of my feet did feel a little tingly, but that was just the first day. Ever since, they have been nothing but very comfortable and I have been happy using them. I'm including some photos, for a bit more perspective. Not sure why they appear reddish, as they look black to me, ha! I guess my camera is sensitive. It even picked up the little specs of dirt or whatever on the top of the shoes, as they look black to me, and not with the whitish specs of debris on them. Oh well, I will have to wash them soon. That is one thing I haven't done yet, but for shoes, I generally wash them in cold water, and if I dry them in a machine, I only air dry them. But, I generally just hang them to dry, as I have a little garment holder that dries cloths and it has a spot for shoes to hang from.