This product is excellent -- at least as I've enjoyed it so far. It's the perfect size for 1 - 2 (or even 3) scoops of powder combined with water (or whatever other liquid you might mix your powder in), and the seal is air tight; nothing comes out of the bottle no matter how vigorously you shake it. It's incredibly easy to clean, lacking ridges or narrow points that might capture residue and escape the reach of a sponge.

My daughter has one & loved it. I had a shaker with the metal ball. Had problems with my protein powder dissolving. This shaker is the best I’ve used. Took half a banana, cut up in pieces. Shook until smooth, then added my protein & almond milk. Everyone needs this shaker!! Easy to clean

I bought one these, I have no complaints. I got a good color and style that matches me just right for a first without thinking it over thinking it over twice. The product seals nicely and secure. For me the top snaps crisp everytime. Got me sold, i'll be looking to buy a few more.

Absolutely love this cup. Had to get a second one because my husband kept using mine. Much better then the old fashion cup with the wire shaker. Worth the money you’ll love this cup.

Loving it. Super easy to use. The shake mixes pretty fast and I like the design and the color options.