SEMI-CUSTOM EAR INSERT MOLD - SELECT YOUR SIZE. Molded earpieces are a must for law enforcement personnel that need to hear the ambient sounds around them. They are "vented" to allow the ambient sound to penetrate the ear while providing a clear audio signal from your radio. The molded earpieces mimic the shape of our ears and lock into place, which lessens the chances of falling out during a foot pursuit or other physical activity. NOTE: Sold Individually.