VECH Protein Shaker Bottle, Leak Proof Smoothies 500ml Mix (White)

-----------------------QA---------------------- Q:How to stir the protein powder without stirring balls£ A:No problem, because it has a reasonable line design, it can make the protein powder shake up and down through the wall of the cup and stir smoothly, there is no need to worry! Q: Are they BPA free £ A:Yes, my friend, BPA FREE. Q: Does it show measurements on cups£> A:Yes but its a little hard to see youll need to hold it up to some light.