Hydra CupProFlow Shaker Bottles 4-Pack (20oz) | Protein Shaker Cups with Whisk Ball, Leak-Proof Lid, Hidden Carry Handle | BPA-Free Gym Mixer for Protein Powder, Mixing Supplements, Fresh Colors

Husband and son love these. My husband likes the fact there is not only the shaker ball but also the additional strainer. Great size and closes securely.

Outstanding shaker bottles! Breaks up the protein powder and creates a smooth shake

I love these shaker cups. They are the perfect size. The design is well thought out. The lid stays on while shaking, and when I accidentally drop the full cup. The material is thick and sturdy. I anticipate using these for a long time. Highly recommend.

EDIT - - - -After my first review of this product, the company reached out to me on their own to offer a replacement for the leaky cups I had gotten. After getting the replacements, 3 of the cups are pretty solid, but the black cup is a bit drippy. In the first set, the black one was the worst while the others were sometimes drippy.My takeaway from all this is that the company wants to improve, they want to provide you with the best product, and they want to make you happy. They listened to my feedback and did what they could to satisfy me.So I have improved my rating from 3 to 4 stars, and in the future I could certainly see them being 5 stars. The only reason I wont give five stars right now is because some of the cups do have leaking issues, but they do back their products and I hope and assume they will use customer feedback and be able to solve any production issues that may be causing bad seals.I think this is a good company doing their best and trying to be better. As long as they continue to have their customers satisfaction in mind, they deserve to be given a chance. I am happy with my purchase and will purchase more in the future as needed.------MY FIRST REVIEW OF THIS PRODUCT-------So, first, they have a thing that comes in the cups that implies that you have won something, but after checking it out, they send it to everyone, and then it is a once a week giveaway on twitter... Assuming they even actually ever give one out. They just want the free advertising, and thats cool, but acting like I was "chosen" for something special is scummy. ...The other petty complaint I have is that they advertise some of the cups as coming in "womens colors" ... I wasnt aware that colors are assigned to people and that drinking out of certain color cups are only for women. Im a man, and I like the color pink as well. As a matter of fact, its my favorite color. So, thanks....About the product itself... It is a roll of the dice of whether or not the cup is going to leak. 3 of the cups did well, but will randomly just leak out of the side for no reason, but then I can try to make them leak and nothing comes out. Its strange. The fourth cup might as well not even have a lid. Water just dumps right out from under the lid every time you tip it without fail. Considering each cup averages out to $5, I would expect better Quality Control, and a better seal.I like these types of cups, I like the shaker ball, it mixes the drinks well, however, my next purchase of shaker cups will be with another company solely because these are pretty leaky and cost more than I believe they are worth.The whole womens colors and clickbait type advertising is just the icing on the 'i dont want to give this company any more money' cake.EDIT - - - -

They worked great!! They are tight sealing which is really nice and leak proof. By far my favorite. I recommend buying them.

The grate insert & shape of container work well & are effective for hard to mix shakes. Have been using for over a year and no spills yet.

These little cups were perfect for our protein shakes. Lid tightens great with no leaks.

The shaker containers and the oatmeal packets are really convenient and tasty