Lightweight and built-to-last, 5.11 Tactical Speed 4.0 8" AR 670-1 Boots feature a rough-out leather upper with abrasion resistant 1200 D nylon tongue for added durability. An Ortholite footbed with Force Foam heel deliver unbeatable cushioning and support, while 5.11's Heat Deflect technology keep you cool when the heat is on. With an ASTM rated slip and oil-resistant outsole, 5.11 Speed 4.0 Boots are authorized for wear with U.S. Army and U.S. Air Force OCP uniforms.