These rods are made of pure titanium without lining and premium coating. It is tasteless, odourless and non-toxic. Originally designed for hiking, camping and travel, it is also ideal for picnics, at home, at school and at the office. Titanium is ultra-light and super strong; it is environmentally friendly, biocompatible and bacteria-inhibitive; it is also extremely hypoallergenic and exceptionally resistant to corrosion.