Why do you need a titanium flask? Titanium is light in weight, stronger than steel and is also a metal with highly inert properties. The resulting benefits of this inert metal are: anti-corrosive, hypoallergenic to nearly all people, and absent of metallic taste or odor. The Titanium flask is not only light enough for the most extreme ounce-counting mountaineer, but also will win the approval of the most snobby collector of Scotch.