I have wide feet, so I usually wear an 8, but I ordered a 7, and they fit fine. I was able to put a pair of orthodics in as well. They're not extremely comfortable, but by no means uncomfortable.
I bought these about 8 months ago after my first pair from Costco began to split. I bought them in March but didn't use them at all from mid-May to September. So, they've really only had about 5 months of use. This has been a very wet season for central PA, and they have gotten quite a bit of use on a college campus. The seam along the back of the left boot split, through the rubber strip covering it. The strip on the back of the right boot is falling off. Both boots have cracks in on the sides, causing my feet to get wet, which defeats the purpose of rain boots. I am now wearing them with duct tape on them, because I don't feel like spending the money to buy new boots so soon. I suppose that when I do eventually buy new boots, I should buy more expensive ones that will last more than one semester. You do a lot of walking in the rain in college.