like this electric shaker bottle. -I have 4 of them. I actually don’t use steel balls at all. I poured 12 ounces of cold water, added the milkshake mixture, screwed on the lid and shook it. I removed the lid and added a smoothie straw.
This unit behaves like a champion. I use milk powder to make protein shakes, BlenderBottle can mix protein powder and milk very well to make a delicious milkshake. I highly recommend this mixer.
This is a great protein shaker electric. I have been using it every day for several months and I have never missed it. The lid is still airtight, and the lid will still work, which is different from some other brands I have tried. It can hold a lot, and it is great when mixing powdered beverages.