Grizzly Tough Pepper Spray Counter Assault is the original bear deterrent developed after William Pounds, the inventor, encountered a grizzly on a camping trip. During a six-year research period in the early 80's, Pounds worked in conjunction with Dr. Charles Jonkel, Director of the Border Grizzly Project at the University of Montana. Counter Assault further underwent a ten year field study by The University of Calgary, under the direction of Dr. Steven Herrero who concluded: "The darn stuff proved to be almost amazing. I carry the spray and think it could be a lifesaver." The unique atomized spray system allows the user to simply fire in the direction of an aggressor's face without the need for pinpoint accuracy. PSF230 Counter Assault Bear Deterrent - 8.1 oz. The 1st EPA Registered bear deterrent pepper spray product is commonly carried by Park Rangers, backpackers and hikers for outdoor use. It has an effective range in excess of 12-30. Black nylon belt holster included. Bear Deterrent Spray with Holster PSF230$37.95 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.