I can only wear them for about an hour, but not for walking any more than a couple of blocks.  They fit me perfect and I will only wear them for winter, and only while i'm in the car, grocery shopping, and lounging, they are not comfortable going for anything longer than 10 minutes, they hurt my feet.  They also look like I'm wearing them backwards, like when kids put the wrong shoes on the wrong feet... but there is a definite left shoe & right foot shoe, they may just need to re-think the shaping of the materials so that these cozy, vegan-friendly animal-free, cruelty-free shoes will sell more come more winters.  i love slipping them on on Grocery shopping Day, but if I plan to go on longer walks, I must plan ahead, and pack my hiking boots, or my sneakers.  These only came out this year, I think, because they need to figure out how to make them more comfortable, and make them look like the left side is definitely the left, and the right, the right.