The 1224 is the New Balance premier stability running shoe designed to provide maximum support and cushioning for the moderate to severe over-pronator. SyntheticMesh upper provides lightweight comfort and support. The TS2 Transitional Support System helps create a smooth transition from heel strike to toe-off. Abzorb Strobel Board runs full length of shoe to maximize shock absorption and comfort. The medial EXTENDED WEB is a lengthened Stability Web delivering increased stability and mild pronation control. N-LOCK external support system ensures shoe is pulled snugly around your midfoot. N-Durance rubber compound for maximum outsole durability. Entire midsole made of Abzorb FL provides unique lightweight shock absorption.