These rods are made of pure titanium with no lining and premium coating. It is tasteless, odorless and non-toxic. Originally designed for hiking, camping and travel, it is also ideal for picnics, at home, at school and in the office. Titanium is ultra light and super strong; it is environmentally friendly, biocompatible and antibacterial; it is also extremely hypoallergenic and exceptionally resistant to corrosion.