Designed to fit most adult and some youth backpacks, this level IIIA Ballistic Shield from TuffyPacks will provide the highest level of protection currently available as lightweight concealable body armor. Stops handgun rounds up to 44 Magnum. Less than 1/2 inch thick and weighs only 1 lb 14 oz. Airport friendly to go through TSA as your carry-on. Our manufacturer lists the retail value at $199 and they sell them on their website at $149.