High Arch  
A high-arched foot is also known as an under-pronated foot. A runner with under-pronating feet is more likely to experience shock transmission through the lower legs, and should choose shoes from the Cushioning Category or those shoes that meet the needs of Under Pronating to Neutral runners.
   
Normal Arch  
Runners with normal arches typically experience minimal biomechanical problems and should select those shoes from the Structured Cushioning Category or those shoes that meet the needs of the Neutral to Over Pronating runners.
   
Flat Foot  
Flat-footed runners tend to have over-pronating feet, which generally result in poor natural shock absorption. These runners should pick shoes from the Maximum Support Category or those shoes that meet the needs of Over Pronating to Severe Over Pronating runners.