This discreet ballistic panel fits great in most larger sized backpacks and provides a certain degree of protection against level III+ rated threats from most high-velocity rifles.  Features:  Constructed of Ultra High Molecular Weight Polyethylene (UHMWPE) creating a light weight ballistic plate Rated at Level III Plus - capable of stopping 7.62x51mm, 7.62x39mm, and 5.56x45mm rounds Flat 11" X 14" rectangular cut for maximum coverage. Can be used for the back panel of a plate carrier, VISM Assault backpack, briefcase, etc. Fully sealed to protect against liquids, chemicals, and other harsh elements Ideal for use in VISM Plate Carriers Weight: 4.4 lbs. (11”x14” Rectangle Cut) Assembled in the U.S.A.  Parents: Please, measure the inside of your child's pack before ordering to ensure proper fit. Should you have ANY questions regarding ballistics, please reach out to us and we will help you in every way.