Yoogo - Self Defense Keychain FORCE MULTIPLIER: The multipurpose Yoogo keychain makes your instinctive defense actions (punching, hooking, stabbing, slashing) more effective. The Yoogo also makes it easy to punch and break glass or ice in an emergency without the full force affecting your hand. IT'S A SECRET IF YOU WANT IT TO BE: The Yoogo is small, discreet, non-metal, and non-threatening in appearance. You can keep it on your keyring at all times and in all places for maximum safety. The Yoogo allows you the element of surprise in a defense situation and helps protect your hand on impact. COMFORTABLE TO HOLD: The Yoogo is designed to rest comfortably between your fingers which helps you to keep a strong grip on your keys and is comfortable in your hand. A comfortable self defense tool is the best self defense tool since you're more likely to have it in your hand when you need it most. The Yoogo helps to turn your keys in to an effective self protection weapon. BUILT TO LAST: Extremely rigid non-toxic polymer and adhesive blend makes the made in Canada Yoogo incredibly strong. Industrial grade metal rings (105 pounds pull resistance) are made in USA. TRAINING & KEY RETURN SERVICE: Detailed videos show the best way to hold and use your Yoogo for maximum effectiveness. Each Yoogo has a unique serial number which allows a free and confidential key return service.