Description Durability of a work boot with the athletic performance and lightweight feel of a work sneaker. It features a full-grain leather upper with TecTuff protection in high abrasion areas, KEEN.ReGEN midsole cushioning, offering 50% energy return with every step, and carbon-fiber toes.PRODUCT DETAILS: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) rated - providing a secondary source of protection in case of accidental contact with live electrical circuits 100% non-metallic construction for easily passing through metal detectors in highly-secured areas Reflective webbing for additional safety and visibility Nylon shank for midfoot support Secure fit lace capture system Locking non-metallic lace hooksFull-grain waterproof leather and 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 Mesh liner provides breathability to help keep feet cool in warm environments Removable metatomical PU footbedWeight: 21.9 oz / 620.9 g Calf Circumference: 9.5 in / 24.1 cm Collar Height: 7.0 in / 17.8 cmSAFETY FEATURES:Meets ASTM F1677-96 MARK II Non-Slip Testing Standards Meets ASTM F2892-11 and F2892-17 SD Standards Meets ASTM F2412-17 and F2413-17 F I/75 C/75 EH Standards Toe Type: Carbon-Fiber Toe Duty Type: Medium Duty Water Proof Certified Slip Resistant (Mark II)