This best electric shaker bottle is exactly the size I was looking for. It really doesn’t leave residue on the cup! If this is what you’re looking for, go for it!

　　The quality of this portable electric protein shaker bottle is excellent. It has milliliter and fluid ounce measurements. There is no additional shaker ball inside and it has a stirring blade assembly attached to the bottom of the cup. The filter breaks down the powder when shaken. The lid has a good seal because it has an extra rubber piece that helps it lock in place. Good quality product.

　　Compared to other brands, this mixer electric shaker bottle is great! It is made of thick, high quality plastic. It is made of thick, high quality plastic with clear measurement lines on the sides that have never worn out for me. I also like that it doesn’t have a separate ball like other brands, which I think is useless.

　　At first I didn’t expect much from this promixx miixr electric shaker bottle, but love it! After using it, I realized that it blends perfectly with my protein and is really leak-proof and super tight suction. The best part is that the vibrator is attached to the bottom so there are no annoying balls. You should consider it!