Blisters occur when two skin surfaces rub together causing friction, resulting in a bubble of liquid.
This can be due to a number of reasons including: wearing new shoes, non fitting shoes, repetitive activities (i.e. running or sports). It can be extremely painful and if not dealt with can lead to infection.
The Neat Feat range has a number of products that can help with this such as the Heel Cups. The Femme range includes the Femme Blister Pads, Sling Back Strips and Heel Shield.