Should be a slipper as he (in my opinion). It is true that at the beginning it smells pretty Chemically, but after not even a week the smell is almost gone. I ordered it in my normal shoe size and it fits very comfortably. A slipper of which makes what he intended, he goes well, you walk in pleasant, it keeps you warm and you do not sweat it. That's all I wanted, and I did not get less. That's why I recommend it to you.