MBT Women's Speed 16 Slip On Walking Shoe 100% Synthetic Imported Rubber sole Breathable Air Mesh Upper Co-Molded Flex Shank MBT's innovative pivot strike area provides runners with the ideal foot striking platform to transition into propulsion while providing support and cushioning. The MBT Sensor Technology in the heel compliments the midfoot sensor by The MBT Sensor Technology promotes a soft midfoot landing and absorbs harmful shock and works with the heel sensor.