Ranger Engineer 12" Heavy-Duty Men's Rubber Steel Toe Work Boots, Olive (21607) 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 FOOT FORM contoured insole and composite shank provide proper cushioning and arch support to fight foot and leg fatigue; removable, washable and replaceable Heavy-duty TracTread outsole and heel for improved grip and traction on slippery surfaces and rough terrain; tough but soft fabric lining for easy on/off SAFE-TOE steel toe protects against impacts from above; ASTM F2413-11 M I/75 C/75 and CAN/CSA Z195-05 Grade 1; 3-eyelet lace-up top for secure fit Recommended use: construction, farming & equestrian; general purpose