The Ortho Active Motion Control Arch Support is designed to support the medial arch of the foot while controlling excess heel movement within the shoe. It features good support for the medial and lateral longitudinal arches of the foot and a cup for the heel. These features help control the movements that cause most types of foot pain. The breathable top cover is a sweat-absorbing, skin-friendly surface that wicks perspiration away from the foot and allows it to escape out the sides of the insole. It is a ¾ length insole, enabling it to fit in most shoes over top of any glued-in insole. It also has an arch cavity on the bottom which allows it to fit over small arch supports already in the shoe, thereby maintaining correct foot alignment. The flexible EVA material is ideal for active use.