PromixxOriginal Shaker Bottle - Battery-powered for Smooth Protein Shakes - BPA Free, 20oz Cup (Black)

Mixes protein well, easy to use, easy to clean, worth the price. Very Durable, still good after over a year.

I got this because I was tired of that stuff that stays at the top of my shakes (protein). I was skeptical about it, but listen.... It works. Depending on how much powder you put into it, it can make the mixer slower but it still works. It's not a large cup so you wont be able to fit the 3 gigantic scoops recommended on the big bag.What it does fit (i use one giant scoop which fills about 1/3rd of the cup), it mixes very well.I don't only use it for shakes, I use it for tea, instant coffee (cold) and pretty much everything. It's my go to cup now. It's battery powered and I used amazon rechargeable batteries. It's very easy to clean. Fill it up with water and soap and turn it on for a minute and it does a pretty good job.There's not a lot else to say about this cup. It does a great job at mixing it completely. Way better than my spoon did and it makes my shakes so much easier to drink. I no longer have to chug down chunks. That's exactly what I was looking for.

I start each day drinking creatine and collagen powder. Since both are difficult to fully mix and settle to the bottom of the glass, I'm pleased with the shaker; it allows me to continually mix the powders as I drink which means I waste less of the supplements. I look forward to taking this when traveling since it works with two AA batteries and its size is packable. It's not as robust as an electric mixer, but because it's so easy to use and clean, I now drink my morning supplements routinely without thinking about the hassle of having to clean up after.

I would definitely recommend this product and will definitely buy again

I bought this forever ago and I used it a few times but I forgot to clean it out and I don’t think I’ve touched it since. It’s probably all disgusting now to the point I might throw it away but I honestly forgot I had it. As for the product, it works fine, I’d imagine the spinner isn’t too powerful so don’t throw in a bunch of solid stuff expecting it to blend but it does what it says it will.

I have to readjust the batteries every time I use this. They won’t stay in position with the rubber bottom on. I exchange the 1st one hoping it was just a lemon but the second one does the same thing. I would recommend purchasing the one that can be changed with a power cord.

The media could not be loaded. Its a nice design, works well until it begins to die. Had it for a year but looks like I have to order another one now. If it doesn't hold up for more than a year this time, going to change to a different brand. Beware the crevice in the cap is kind of hard to clean. Flaw in design, hopefully they fix it.

I’ve had several of these cups. The first one I bought in 2008 and it still works. Its capacity is small though. So I looked for other ones. I’ve purchased several but they all die or have issues within a year. I’ve had this one for a few years now, and it’s still the best one I’ve ever had.