Ball of Foot: Padding to improve cushioning. Arch: Reinforced to support foot. Heel: Deep heel cup to absorb impact with every step. Helps prevent pain from splints, runner's knee and plantar fasciitis. During athletic activity, the foot is subject to the shock from impact of 2-3 times your body weight with every step. Active Series insoles reduce shock by 40% and, for those with shin splints, runner's knee and plantar fasciitis, helps relieve and prevent the pain. Designed with Triple Zone Protection. Heel: Heel pad absorbs impact yet is very responsive. Arch: Unique arch designed improves transition of weight from landing to push-off. Ball of Foot: Thick ball of foot helps distribute pressure throughout push-off. SweatMax technology helps eliminate odor. Made in China.