Almost no visible arch when standing. The entire sole makes contact with the ground, often causing overpronation and inner-edge wear on shoes.

A slight visible arch with most of the sole touching the ground. Tends toward mild pronation but is more flexible than very low arches.

A well-defined arch with balanced weight distribution. The most biomechanically efficient foot type, ideal for almost any activity.

A complete absence of an arch where the entire sole rests on the ground. Often hereditary and may cause heel, knee, hip, or lower-back discomfort without proper support.

A pronounced arch with very little midfoot contact. Tends to underpronate (supinate), placing extra stress on the heel and ball of the foot.