I want to buy 17 for beauty, and I want to buy low for comfort. 17 is a classic model with a hard bottom, but it is not wear-resistant, and it looks heavy, but it feels particularly stylish and is the most worn model on the street. Low's weight is lighter than 17, which is equivalent to a light version, but the foundation is very soft and it is particularly comfortable to walk. It obviously has the feeling of air cushion, that is, the upper foot feels more breathable than 17, but there is no metal label.