Z-TEC upper provides target flexibility and support while ARCTrax/SL technology provides Tour-rated traction StratoFOAM heel crash pad for all-day walking comfort, 3D molded padded ankle collar with breathable mesh lining Lightweight, firm EVA in forefoot for maximum stability, forefoot nylon spring plate maximizes energy return Updated last design provides athletic profile and wider toe box All-day underfoot comfort from an OrthoLite X25 FitBed