The Cold Steel Pocket Shark may be the biggest, baddest permant marker around. Made from state of the art high-impact plastic and features walls that are 4 times thicker than similar markers. Built for impact, in a self-defense emergency it can become an efficient yawara stick. The screw-top won't pop off like a regular marker cap would when you strike a percussion blow or when obtaining joint locks or submission holds. Easy to carry - clip it to a shirt or coat pocket, or carry in purse, pack or brief case. Imported.