Proper roll of material in running shoes is important for
a correct shoe fitting. Select a shoe that conforms as nearly as possible to
the shape of your foot. Each shoe company works from a specific last - their
last may match your fit more closely. The "last" of the shoe is the model on
which the shoe is built. There are three types: straight, semi-curved, and
curved. Make sure that the material of the shoe is not too loose and there
isn't a lot of extra material when the shoe bends. The upper part of the
shoes should be made of a soft, flexible material to match the shape of your
foot.