Semi-Flexible Arch Support for Low-Profile Stability. 3-Pod™ Cushioning System absorbs shock and helps prevent over-pronation–the leading cause of many common injuries such as plantar fasciitis. Flexible stability cradle provides advanced arch support and deep heel cupping. Custom EVA layer conforms with normal wear to match the contours of the foot. Low-friction, antimicrobial top cloth helps prevent blisters and control odor. Metatarsal arch support offloads pressure from the ball of the foot to help relieve pain. Forefoot crash pad provides extra cushioning under the ball of the foot to result in a smooth transition to toe-off. Sold in pairs. Latex free.