It’s a tough, flexible, hi-tech polymer material. THROOM™ Targets are non-metal, reactive and a safer alternative to steel targets. In 1995 we were the first to introduce this type of shoot-through polymer material to the shooting industry. Many magazines and shooters started to call them plastic targets or polymer targets or self-healing targets. Actually, it’s a high-performance elastomer, so we named our target material SHOOT THROO. Our targets, Bases, Nuts and Bolts and every elastomer product we offer to shooters is made of this self-healing material. Bullets pass through without splatter or ricochet.