Sheath knife

A sheath knife is a fixed bladed knife that fits in an either leather or material (nylon, kevlar, leather etc. ) sheath for protection of the knife and carrier.

The blades vary in size, shape and construction.

In Australian law, "sheath knife" has a different definition. In this case, they are a kind of non-folding, fixed-blade knife which has "a sheath which withdraws into its handle", thus giving something of the effect of an "out-the-front" switchblade. These knives, like switchblades, are "prohibited weapons" in Australia.