I have used this product once. It well worth the $20.00 I paid for it. Faster than a baton, light and already with you on your stinger flashlight. No extra equipment to carry. I will say have your gloves on prior to attempting the window break. I got a few small cuts, but noting serious. There was just no time for the gloves on this use. The product can be found here. http://www.bustacap.net/content/view/30/45/