Keith Titanium 22 fl oz Single-Wall Mug with Folding Handle and Lid is made of premium pure titanium grade 1 without lining and coating. It is tasteless, odorless, non-toxic and dishwasher safe. Originally designed for backpacking, camping and traveling, it is also great for picnicking, emergency prepping and around the home, school and office. A 32 oz Nalgene bottle fits inside it without lid.The lid keeps your drink from dust and dirt; it helps to keep your drink warm or cold, too.