Lightweight NIJ level IIIa 10” x 12” shooters cut panel is 33 layers of Ultra High Molecular Weight Polyethylene Fill (UHMW PE Film) backed with a 0.5mm polycarbonate layer and high density closed cell foam to minimize back-face deformation. These panels are extremely slash and stab resistant. Tested at Oregon Ballistic Labs but as with all ballistic products we sell, we have also taken these to the range and shot tested them ourselves. 10 shots 9mm Black Hills ammunition from 4 meters, zero penetration, minimal back-face deformation. Note: panel set only, fits regular size MOLLE Tactical Vest sold separately.