it is difficult for
to keep up. In order to choose the best shoe for
you, it is necessary to learn some basic facts about shoes, feet, and running.
First, you need to know the 5 basic components of a running shoe: last, upper, outsole, midsole, and heel counter.
Last: the last determines the three dimensional shape of the shoe. There are straight, semi-curved, and curved lasts. Last shapes are determined from average foot shapes.