ProStak

This has to be the best blender bottle I've used. It's actually 16oz in size, which is a great size for single servings of protein shakes, pre workout, intra workout, custom stacks, electrolyte mixes, and such. I don't drink from it all day, I have an insulated steel bottle for my daily drinking of water, I just use this for mixing. The best part is the storage jars it comes with; you can attach as many to the bottom as you want; even better, then 100cc (smaller one) can go inside the top of the bottle itself to save space. The only thing that would make it better would be a rounded base and tritan plastic like the pro series, but I'm not sure that's possible with the jar attachments.

The ad itself is a bit deceptive being that the bottle itself is only 16 oz. and is very small. The 22 oz. listed comes from all of the other ad ons which don’t contribute to the filling size of the main tub. It also arrived with a scratch on the bottle. Those two reasons are my main concerns about why I rated it so low, other than that it appears to be a high quality product. I just wish it were bigger like it looked in the photos.

The bottle works great, I bring it with me to work every day. The supplement holder lets me bring everything I need for my lunch workouts. Best shaker bottle I've ever purchased!

This is a nicely designed bottle. I only need one of the bottom jars but it's nice to have two. I also love that you can stuff the collapsible spring into one of the jars to silence it. I'm a little worried that the plastic locking parts that ***** the jars on will wear out quickly but so far, so good.

This is my go to bottle now. Love how i can carry extra supplements to the gym with me at the bottom of the cup

The ProStak is definitely worth the few extra bucks in comparison to the Classic Blender Bottle. It holds my supplements in different jars and prevents any clumps to form from moisture in the bottle. This works great if you take your supplements on the go/in the gym.

I chose the smaller of the two bottles for a reason. Works great, and the supplement holder attachment is big time convenient. Definitely recommend!

This blender bottle is great except that it doesn't hold enough water for me. The small containers are great for supplements though.

Pro Stack Blender Bottle This is an innovative bottle that blends well. It has a stackable container for vitamins, a drink powder or a snack.

My most favourite companion at gym. Prostak is an excellent utility shaker cup. It can even blend bananas on the go with ease. Despite being a wonderful product it do have a small fault at the bottom of cup where expansions attach. Expansion jars attach firmly with each other but to the bottom of bottle its twist and lock system is not up to the mark

Love the shaker and the containers, blends my protein shakes really well. Easy to clean as well!

I bought two of those right after reading your reviews in this website. I had high expectations and I wasn't disappointed at all. On the contrary, the product is just awesome and very easy to use. The shake itself has plenty of space and the blender ball mixes well any kind of ingredient. I'm definitely going to use this until it becomes useless, so I'm going to buy more of those.

Awesome products. Makes life ten times easier when going to the gym I dont have to carry as much. Great job by Blender Bottle