Remembering that work is a physical activity that requires endurance, flexibility and power, Red Wing Show Company designed a line of footwear- WORX™ Industrial Athletics- with industrial strength. Meeting the following ratings: (5504, 4410: ASTM F-2413-05, M 1/75, Type SD 6405, 6418: Type SD) and receiving excellent ratings for oil/gas, chemical, abrasion, traction and comfort on concrete settings, the WORX Industrial Athletic line is sure to provide all-day comfort and safety.