It's the biggest, baddest, permanent marker around! The Pocket Shark is made from a high impact polymer and features walls that are 4 times thicker than conventional markers. This means it's built for impact and will survive the meanest blows and roughest treatment imaginable.
In a self-defense emergency, it can become an efficient Yawara stick.
Plus, the screw on cap will stay in place and won't pop off like a regular marker and leak all over your clothes. Clip it to a shirt or coat pocket, or carry in your purse, pack or brief case. There's simply no excuse not to own one!