Ranger 6" Heavy-Duty Men's Rubber Steel Toe Work Shoes, Black & Yellow (R1141) Durable, flexible, industrial weight rubber is hand-laid and vulcanized at high heat for 100% waterproof construction; ozone-resistant to prevent cracks and remain flexible in cold weather 5-eyelet lace-up closure for a tight and secure fit; composite shank supports arches and reinforces construction FOOT FORM contoured insole provides proper cushioning and arch support to fight foot and leg fatigue; removable, washable and replaceable; tough but soft fabric lining for easy on/off Heavy-duty TracTread outsole and heel for improved grip on slippery surfaces and rough terrain; SAFE-TOE steel toe protects against impacts; ASTM F2413-11 M I/75 C/75 EH and CAN/CSA Z195-05 Grade 1 Recommended use: construction, mining, oil & gas, food processing, farm & equestrian, waste disposal