Abrasion Resistant Flesh-Out Cattle Hide Leather. Lightweight and strong Performance Denier Polyester. Better response to the ground: 4mm heel to toe drop. Slip resistant rubber outsole. Lateral response and movement: directional outsole lugs. Energy returning lightweight CMEVA midsole. Actively pulls moisture away from foot: moisture wicking lining. 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.