I hesitated to buy boots that are not leather. I do not regret this purchase. After wearing a winter all-weather, they are always spotless. I just interviewed a "brillette" (kind of big sponge waxing and ready to use). They are fully waterproof and warm (fur sheep). Above all, they are really comfortable. I, who have a lot of pain, I appreciate the well-cushioned running with these boots. The only remark is that they carve a little small. I had taken 38 (my usual size) and I had to return to take the size up.