Purchased the MixMaster shaker, hoping it would do exactly what it said - MixMaster. Anything but! Mixing is atrocious in it. My older shaker from SPORTS DIRECT with the metal spring was far more effective and effortless. The shaker also leaks which is even worse! Not happy at all. Very disappointed.

Mixes my supplements very well. Cleans easy, no leaks so far and looks good....can't complain for the price wish I bought and extra one but will do on my next order. Goes Well With: Varies supplement powders

I think it's a decent product. Doesn't leak, solid lid, and generally does a good job mixing with most protein powders(*). Easy to clean, too. (*) I think if you happen to use protein powder that tends to clump up quickly when it reacts with water it can be a bit tricky. I'd recommend using a bit less water/milk/whiskey/whatever (more space for the thing to do its magic). Keep shaking, it should work out eventually. Goes Well With: Any decent protein powder, I suppose!

I have had 2 of these and they both leak, not very useful. The first one leaked badly so I was sent a replacement and after a few uses the second one leaked too.

This protein shaker shook my protein until it was a protein shake. 10/10 would shake again. Goes Well With: protein milk water vigorous shaking