Newton Distance S IV Women's Running Shoes Mesh P.O.P.1 Platform - Lightweight and power packed, designed with open chamber Action/Reaction technology with more isolated and rigid lugs for greater responsiveness. Action/Reaction technology in Midfoot - Newton's patented active trampoline-like technology reduces energy loss. E.M.B - Extended Medial Bridge offers a broader midsole for extra stability. Anatomical Metatarsal Stretch Panels - Upper that moves with your foot for a more comfortable and natural feel. Biomechanical Metatarsal Sensor Plate - Works you foot for a more stable ride.