Byrna Shield Bullet Resistant Backpack Body Armor - As easy to insert into a standard-sized student backpack as a school notebook, Byrna Shield Backpack Body Armor is a thin, lightweight (14 oz.), flexible Level IIIA-rated ballistic plate. It can withstand up to 6 hits from .44 magnum bullets with velocities up to 1,464 feet-per-second. For the price of a pair of sneakers parents can have peace-of-mind, knowing they're giving their children a chance when the unthinkable happens, and avoid the high cost of regret. Features Made in America with Patented Technology Stops up to a .44 Magnum Bullet Extremely lightweight (14oz) and very thin Flexible fits discreetly in a backpack (not frightening) Available in both children's and adult sizes.