Frank Green | Colour Change - Lava | Flip Straw Lid | 1L
This 1L Frank Green bottle changes color when filled with cold water and is made from over 95% recycled stainless steel. It features a flip straw lid for easy one-handed use.
- The description claims the bottle changes color instantly with cold drinks and gradually returns to its base hue.
- The description claims the bottle is made from over 95% recycled stainless steel.