The Syncro Seek 2 offers superior breathability, torsional (side to side) support and cushion resulting in a shoe that supports like a hiker, yet rebounds like a runner. Safety on and off trail with an abrasion resistant toe and heal as well as 360 degree reflection. Syncro Trail Frame - Run Tuned Suspension System SKYDEX Heel crash pad External Forefoot Flex grooves on injection molded EVA midsole for improved flexibility and toe off New outsole lug design for improved on and off road ride Abrasion resistant heel and toe High rebound forefoot foam with TPU forefoot protection plate Welded midfoot microfiber suede support High performance Ortholite/EVA hybrid insole PI carbon rubber perimeter with high-grip interior 360 deg. degree reflectivity.