The Cold Steel Pocket Shark is not your ordinary marker, it is constructed from thick glass-reinforced plastic, known as Grivory. It is said to make a particularly good Yawara, which is a short stick used as a weapon in some martial arts.

Remember, however, a self defense weapon such as this one is only as good as the skill of the user. If you don’t have the knowledge of pressure points or the ability to strike them in a volatile situation then it will be just a marker, albeit a marker made out of Grivory. [Cold Steel via Gadgetted, Oh Gizmo]

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