The Dauntless RB8820 8" Tactical Boot from Reebok Work is an AR670-1 compliant military boot that features a moisture-wicking,nylon mesh lining that has been treated with Aegis Microbe Shield® to prevent the growth of unwanted odor-causing bacteria. This non-metallic boot is airport and security friendly.Aegis Microbe Shield®100% Non-MetallicSecurity FriendlyInjected EVA Cushion MidsoleSlip-ResistantAR670-1 CompliantAdditional InfoAnti-Microbial,Military,Removable Insoles,Airport Safe/Steel Free,Slip-Resistant (Non-Skid),Breathable,Rubber Sole,Moisture Wicking,Leather,Nylon