This Belleville Waterproof Steel Toe Flight & Combat Boot C790 ST is approved for flight by the U.S. Air Force and U.S. Army and built for comfort and safety, the C790 ST contains both an ASTM certified/EH rated steel toe and a GORETEX lining that not only makes this boot waterproof but also petroleum, oil and lubricant (POL) resistant. This lace-to-toe design also allows for a better, customized fit for increased stability and support. FEATURES: HEIGHT: 8” (Standard Military Height) UPPER: Flesh-side out cattlehide leather and nylon fabric MIDSOLE: Highly cushioned, shock absorbent midsole OUTSOLE: 100% rubber VIBRAM® Sierra INSOLE: Single density molded removable insert SPECIAL FEATURES: VANGUARD® running shoe sole constructionSteel toe meets ASTM F2412-18 and F2413-18 standards for impact & compression and EH ratedDurably waterproof and highly breathable GORE-TEX fabricAR 670-1 CompliantAFI 36-2903 Compliant