Bought as a lounging shoe for winter days for mostly indoor use- found myself sweating most the time because they are so warm!! Even used them post-skiing walking around in gravel and they held up great. Not the best quality, some of the insulation will leak out, but that is what you get with this inexpensive option. Not the highest quality, but if you are looking to stay warm with casual use, post-skiing, post-winter activities, even post skating for a comfortable lounging slipper its the way to go. There is a harder material on the foot, but they get wet fairly easily but dry quickly. 5 stars for comfort, price and warmth, but rated 4 stars because lack of breathability, quality (not built to last heavy use) and no DWR which would be awesome. Just use what they are recommended for (winter lounging) or chilly weather camping and they will be a wonderful purchase. Also easy to pack or keep in the car!
I'm a 10.5 foot, ordered a XL. Good fit.