The lid is made of stainless steel, Tritan, and a silicone ring.
Faux-leather cover with a metallic handle is made from borosilicate premium-quality glass.
How to use
Rinse your bottle with hot water and mild soap at least once a day
And for deep cleaning, use hot water, vinegar, and a teaspoon of baking soda
You can also clean the bottle using a dishwasher, but make sure to remove the cap and cover