Premier Body Armor Backpack Panel Vertx Overlander Level IIIA Kevlar Core w/500D Cordura Shell Black. They use the same ballistic material in these panels as the material used in their soft body armor vest for law enforcement. t is tested to meet the NIJ ballistic standards for Level IIIA is just .22 thick and constructed of the finest made in specialized factories Kevlar and features a rugged 500 Denier CORDURA outer shell and is TSA approved. Note: Pick a panel at least 1 smaller than the listed internal dimensions of your bag. Specifications for Premier Body Armor Vertx Overlander Backpack Panel: Manufacturer: Premier Body Armor Fabric/Material: Kevlar Core w/500D Cordura Shell Weight Capacity: Level IIIA Finish: Black Package Contents: Premier Body Armor Vertx Overlander Backpack Panel Premier Body Armor BPP9156 Backpack Panel Vertx Overlander Level IIIA Kevlar Cor