Strong arch and metatarsal rise is ideal for medium to high arches and helps relieve pain in the ball of the foot, and guard against harmful over-pronation * Anti-Friction fabric wicks moisture away from the foot, reducing heat and shear to prevent blisters;Biomechnical engineering utilizes advanced materials to provide support and stability for foot health and comfort;Polyurethane base layer provides cushioning that will never flatten out over time or lose its comfort;Vy-GelTM performance grade elastomer pads provide shock absorption across the forefoot and heel strike to protect against Plantar fasciitis;Made in the U. S. A.