Originally introduced in Monster Hunter World, Mantles are a unique tool that gives you some unique effects when equipped.

Heating mantles are used for heating or tempering organic liquids placed in reaction kettles, round-bottomed flasks, or relevant reaction vessels required for the boiling, evaporation ...

The gas mantle was invented in 1880 a short time before the electric bulb. So the gas mantles became exstinct as houses were lit by electricity. This was salvaged from the Carrick Gas Works.