Product Description: The base head designed to be used with the D2 Headgear systems. It features trauma plates layered inside A 3/4" foam for impact dispersion. The patented ear-release canals protect ear from misdirected strikes. It must be worn with goggles, mouth guard and Face Cage or D2 Mask. The D2 Headgear System offers versatility for any defensive tactics and weapons defense law enforcement training programs. Replacement part for D2 Headgear Systems Trauma plates layered inside foam Patented ear-release canals Must be worn with goggles, mouth guard and Face Cage or D2 Mask