Tigernu - Security upgrade,Scientific design bulletproof technology,new definition of backpack

Tigernu Bulletproof Backpack, Backpack with Level II Stand Alone Ballistic Bulletproof Pane, Security upgrade and Scientific design,Every time the bullet warhead penetrates a layer of protective material, it will be lost. Part of the kinetic energy speed will gradually decrease until the kinetic energy is exhausted, The bullet warhead is successfully blocked, and achieve bulletproof purpose