Amazon.com: Carhartt Rugged Flex 6” Composite Toe Work Boots 。Carhartt Rugged Flex 6-inch work boots provide reliable protection and comfort for demanding environments. Constructed with a Storm Defender waterproof breathable membrane, these boots keep feet dry while allowing airflow to prevent overheating. The composite safety toe meets ASTM F2413-17 standards for impact and compression, while the electrical hazard rating offers additional job site security. A cushioned insole and Rugged Flex rubber outsole ensure flexibility and support throughout long shifts, complemented by high-abrasion resistant rubber on the toe and heel for enhanced durability. Brand: Carhartt Model: Rugged Flex CMF6371 Type: Work Boot Toe Type: Composite Safety Toe Safety Rating: ASTM F2413-17 M I/75 C/75 EH Waterproofing: Storm Defender Membrane Outsole: Rugged Flex Rubber Upper Material: Leather Height: 6-Inch Color: Black Closure: Lace-up Features: Electrical Hazard Protection, Slip Resistant, Abrasion Resistant Keywords: Workwear, Construction, Industrial, Safety, Waterproof, Composite Toe, EH Rated, Rugged, Durable, All-Weather, Heavy Duty, Professional, Utility