The Spartan Armor Backpack Flex Fused Soft Body Armor is a level IIIA rated soft body armor. The Flex Fused Soft Armor is comfortable and easy to wear. The 11" x 14" panels will also function as inserts for backpacks. As it's name implies, the Spartan Armor Systems Flex Fused Core Soft Armor is flexible and easily forms to most properly sized backpack chambers. FeaturesTested and passed in accordance with NIJ-STD-0101.06 / MIL-STD-662FRated to stop .44 MAG SJHP, as well as Special Threat Rated to stop.357 SIG FMJ Low-profileMulti-hit ratedCan be used stand alone or in conjunction with hard armor