I received the cloudy as a gift over the holidays. I asked for size 41 European. I’ve never had issues with the size. However, when I first received my clouds, they fit perfectly, and now they are pretty much worn in. I wash them to get the cushion back, but it usually goes away within a couple of hours. That being said, they are comfy and warm, but I would say that they run large, especially once they are worn in. I would like to get another pair in a smaller size for sure.