Wrist Sheath

This small leather sheath is made to hold a knife or dagger, and is strapped to the forearm (below the sleeve of a garment) so that the weapon can be flipped to the hand by an arm movement and the blade readied for action. A dexterous thief can work a blade into his hand by arm movements disguised in the context of changing posture while sitting in a chair, or similar, seemingly innocuous moves. Again, the obvious advantage is that of concealment.

Variants on this theme are drop sheaths, which are usually sewn into leather jackets or similar articles of clothing. Here, release of the dagger from the sheath can be triggered by mechanical means (pressing a jacket sleeve stud, etc.) or by muscular stimuli triggering pressure pads (tensing the biceps firmly against the fist of the other arm, etc.).