First Defense pepper spray is a trusted leader in the less than lethal industry. Known for research and development, Defense Technology, also referred to as Def-Tec, defines premium pepper spray with the First Defense brand. Trusted by law enforcement nationwide this premium-grade Oleoresin Capsicum (OC) pepper spray is second to none. Known worldwide for providing superior self-defense pepper spray. Hundreds of professional agencies trust Defense Technology because of their commitment to product integrity. As a result, their pepper spray products are always on the cutting edge.