A high heel greatly increases the chances of developing a foot problem. The last is the part of the shoe that curves in slightly near the arch of the foot to conform to the average foot shape. The upper is the leather or synthetic part of the shoe that encases the foot. Remember the material from which the shoe is made can affect fit and comfort. Softer materials decrease the amount of pressure the shoe places on the foot.
Stiff materials can cause blisters.
A counter may be used to stiffen the material around the heel and give support to the foot.