Our Bulletproof Backpacks are better than the competition as we use our trusted AR500 Level III 10" x 12" Contour Curve plate. This is the same plate used in our vests. This plate is rated to stop multiple hits from a rifle or lesser threat such as a handgun. Weighing in at 8.3 lbs. good judgement should be used in regards to small children. The plate is undetectable inside the backpack.