Sublite cushion work achieves maximum lightness and flexibility in a work shoe. With deep flex grooves, the sublite foam midsole reduces weight and allows for greater range of motion. Rubber pads provide traction at heel strike and forefoot takeoff while minimizing weight. Exofuse upper for lightweight flexibility and water resistance. A memorytech massage footbed adapts to the unique contours of your foot. (4E = Etra Extra Extra Extra Wide)