Ranger 16" Heavy-Duty Men's Rubber Insulated Work Boots with Steel Toe and Metatarsal Guard, Red & Black (9810) 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 Polymeric foam insulation to keep feet warm in cold working environments; soft fabric lining for easy on/off; composite shank for arch support; 5-eyelet lace-up top for secure fit Heavy-duty TracTread outsole and heel for improved grip and traction on slippery surfaces and rough terrain Built-in metatarsal Flex-Guard floats on top of the foot for increased flexible protection; SAFE-TOE steel toe protects against impacts; ASTM F2413-11 M I/75 C/75 Mt/75 and CAN/CSA Z195-05 Grade 1 Recommended use: construction, mining, oil & gas, farm & equestrian