Waterproof construction, a multipurpose lugged outsole, and thick cushioning make this supportive work boot ready for anything. Left and right asymmetrical, non-metallic carbon-fiber toes offer unobtrusive fit and are 15% lighter than steel KEEN.DRY waterproof, breathable membrane Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear provides a secondary source of protection incase accidentally coming into contact with live electrical circuits 100% non-metallic construction for easily passing through metal detectors in highly-secured areas Nylon shank for midfoot support Abrasion-resistant synthetic upper KEEN.BELLOWS FLEX technology allows footwear to bend and flex up-to 3x easier Non-mutilating upper reduces the chance of marking or scratching surfaces KonnectFit heel-capture system for a locked-in feel Secure fit lace capture system Material Synthetic/Textile Upper Oil- and slip-resistant non-marking rubber outsole KEEN.ReGEN: A lightweight, compression-resisting midsole providing 50% more energy return than standard EVA foam Moisture-wicking textile lining Removable metatomical PU footbed Technologies KEEN.DRY A proprietary waterproof, breathable membrane that lets vapor out without letting water in. KEEN.BELLOWS FLEX Built-in flex that makes every step feel easier, bending where other boots crack and weaken over time. Electrical Hazard Provides a secondary source of protection when outsole accidentally comes in contact with live electrical circuits, helping to reduce the potential of electric shock. Weight & Dimensions Weight:25.2 oz / 714.4 g Calf Circumference:10.0 in / 25.4 cm Care Gently brush with a soft, damp sponge to remove loose dirt. Treat stains right away with a gentle cleaner. Air dry away from heat. Safety Features Safety Rating: Meets ASTM F1677-96 MARK II Non-Slip Testing Standards Meets ASTM F2412-17 and F2413-17 M I/75 C/75 EH Standards Meets ASTM F2913-17 SATRA Non-Slip Testing Standards Meets ASTM F2412-18 and F2413-18 M I/75 C/75 EH standards Toe Type:Carbon-Fiber Toe Duty Type:Medium Duty Water Proof Certified Slip Resistant (Mark II) Keen Men's Kansas City WTPF Carbon Fiber Toe Boot