FitRx Sport Shaker Bottle, Portable Protein Shaker Bottle Cup, 28oz.

Mixes protein powder and boost very easily with only about 30 seconds of shaking. No lumps mixed throughly. No noise while shaking as this bottle does not use a wire ball to blend powder and liguid. Has a removable plastic mixing screen. Works great.

I went to visit my daughter and had the stuff to make my protein shakes but no way to mix it up to get the lumps out. I put in an order at the local Walmart when I saw they had this available. I could mix it up and drink from the shaker's spout. It has ounces and metric measurements on the side which was perfect. I've continued using it every day even though I'm back home. It is made well and doesn't leak, as long as you have the drink hole plug securely in place. That's another reason I love this is I can close the drink hole and shake it up again if the shake contents start to thicken or separate. I just add water when I'm done which helps clean it out. Photo with the rinse water is all I have right now.

The size, construction, and functionality of the cup is good. However, the key items that are not good about it is the "O" ring that keeps flopping out of the lid that ensures the zero leakage. It is cheap and ill fitting to the cup lid. You have to stop and hassle with trying to get it back on. Additionally the grip band on the top is also loose. Bad specs on these two key items to what would otherwise be an excellent cup.

Nice size! Three things I did not like. 1. two stickers that were impossible to remove. 2. Not sure where to place the ring it just drops out. 3. Lots of condensation from the cup if it sits for a while, make sure you put something under it leaves a mess. Other than that, it's OK for the price.

Let's see, it came with a sticker that didn't peel off and been washed a few times and still on. The O ring doesn't stay put and fall s off the lid. Too much powder doesn't get mixed no matter what. Def get a different shaker.

The bottle leaks so bad, gasket is not enough for the bottle. Lesked all over a new shirt. bottle is trash.

This shaker cup has two problems. First the adhesive they use to attach the packaging to the lid doesn't wash off. Second there is a slight leak at the bottom of the cup. I had to throw it out.

I am 27 years old and have never reviewed a single product in my life. These shaker bottles are the worst I have ever had. I'm going to try and return them. I washed them once, and they are so distorted I can't even put a lid on either of them. They are absolute garbage. DO NOT BUY THESE!

All in all, a very below average cup. More often then not, the cup would leak whenever it was shaken, even adjusting the rubber inside well. The lid got stuck all the time and very hard to open/close it. I had bought two cups, one for me and one for my wife, and both had the same issues. We had to buy two new cups, from another brand, because these ones weren't working for its purpose, which would be a shaker. Now they serve us as two expensive simple plastic cups.

only had it for a couple days before the seal inside the lid became loose and started leaking like crazy!