Purofort Comfort Grip Full Safety Blue Shoes E262673 Rubber rubber sole Size range: US3-US14 Protective toe + midsole Standard: CSA Z195-09 SD PR | ASTM F2413-11 M I/75 C/75 SD PR Certification : For the American market Dunlop boots are tested in accordance with the ASTM standard. Dunlop boots for the Canadian market are tested and certified in accordance with the CSA provisions.