The Shellback Tactical Prevail Series 10 x 12 Lightweight Level IV Hard Armor Plate Model 4SICMH is our top of the line super lightweight, mulit-hit and multi-curve level IV plate. This plate weighs in at a superlight 5.7lbs. Model 4SICMH provides level IV protection against armor piercing rounds and constructed of silicon carbide ceramic and UHMWPE composite.