The Keith bottle is made of pure titanium with no lining and premium coating. It is tasteless, odorless, non-toxic and dishwasher safe. Originally designed for hiking, camping and travel, (White) is also ideal for picnics, emergency preparedness and around the home, school and office. Titanium is ultra-light and super strong; It is environmentally friendly, biocompatible and bacteria-inhibitors; It is also extremely hypoallergenic and exceptionally resistant to corrosion. Corrosion resistant, Titanium is very stable in many media, this is explained by the dense layer of solid titanium dioxide generated by oxygen that protects against corrosion. Biocompatible, pure titanium composed of more than 99.9% Ti and other traces of Fe, C, H, o; This component is harmless to the human body; our products will not pollute our planet, it is by far the strongest metal on the planet. Ultralight, Titanium has a density of 4.5 g/cm3, higher than that of aluminum, but lower than that of steel, copper and nickel; its weight is close to that of aluminum at the same volume, it is an ideal metal for a composite metal without having the weight of steel.