Certified By The U.s. Navy For Both Flight And Flight Deck Use, The All Leather, Gore-Tex Lined 800 St Is Fully Waterproof And Contains A 100% Rubber Vibram Chevron Outsole To Minimize Fod And Improve Traction On Wet Shipboard Surfaces. Boot Features: 100% Cattlehide Leather Upper Vanguard Sole Construction Combining A Cushioned Direct Injected Midsole With A 100% Rubber Vibram Chevron Outsole For Fod Minimization Gore-Tex Waterproof Fabric Bootie Steel Toe Is Astm F2412-11 And F2413-11 Certified And Eh Rated Soft Removable Insole 8" Height Made In Usa & Berry Compliant U.s. Navy Flight & Flight Deck Approved