Lightweight and strong performance polyester • Better response to the ground: 4mm heel-to-toe drop • Slip-resistant rubber outsole exceeds industry standards • Lateral response and movement: directional outsole lugs • Energy-returning lightweight CMEVA midsole • Athletic Strobel construction • Contoured to the foot for flexible movement: removable molded EVA footbed • AR670-1 Compliant: As an option to issue boots, soldiers may wear commercial boots of a design similar to the Army combat boot as authorized by the commander