The best shaker I've ever used!
Absolutely no chunks of dried powder and I'm able to drink my protein drink with ice in it no problem. The only reason I gave it 4 stars instead of 5 is because a previous review said something about condensation from the bottom of the bottle ruining their vitamins, and I agree. I would say the easy fix is to just unscrew it and drink it separately but I know that can't always be the case.
Rating: 4 stars