I have been using the shaking almost daily since it was deliver for my coffe ad protein breakfast, and it is great, the lid is a bit difficult to screw to the shaker and the coil spring is really useful when dissolving the protein, and watch out with hot liquids.
Easy to use. Easy to clean. Easy on the eyes.
Doubles up as blunt force object if you’re that way inclined...
Shaker Bottle has measurements on it and includes a removable bottom for storage of your powder/mix. Buy one!