The TerraX3 is a heavy duty Berry Compliant boot. This durable hot weather boot features abrasion resistant flesh-out cattle hide leather and a breathable moisture wicking lining along with a Vibram outsole. This style is also AR670-1 Compliant, built specifically to meet military specifications. Details: Abrasion resistant flesh-out cattle hide leather with Cordura, moisture-wicking Dri-Lex lining, cushioned removable insert, man-made cushioned midsole, proprietary Vibram trident rubber outsole (FOD approved), direct attach construction, made in the USA, AR670-1 Compliant. Material: Leather, Cordura, Rubber, Man Made.