SUBLITE CUSHION WORK - RB4041 Men's Athletic Work Shoe - Black 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. Mesh uppers allow for ultimate breathability and moisture transfer for all day cooling comfort. A MemoryTech Massage footbed adapts to the unique contours of your foot.