Reebok Work RB7755 Trainex - Men's 6" Sport Boot with Composite Toe, Static Dissipative (ESD), Aircom™ Heel Airbag and Extra Large Sizes that meets ASTM F2413 Safety Standards. These boots feature Reebok Dual Resistor (SD 10) static dissipative, 100% Non-metallic construction, moisture wicking nylon mesh lining, Heel Airbag, Abrasion Resistant Heel and Toe Guards, and Extra Wide Toe construction.