Designed for the under to moderate over-pronator * Solyte midsole * Impact Guidance Designed for the under to moderate over-pronator * Impact Guidance System (I.G.S.) employs linked componentry to enhance the foot"s natural gait * Rearfoot and Forefoot GEL Cushioning System * Biomorphic Fit Upper reduces buckling and the potential for irritation * Personalized Heel Fit dual layer of memory foam collar