Yhmxh Shaker Bottle, Clear Protein Shaker Cup with Mixing Ball, 16.5OZ Leak-Proof Extra-Durable Gym Bottle with Scale Marks for Work Out, Portable BPA Free Shaker for Protein Power Shakes (Black)

The mustard yellow color is not my favorite, but the size of this cup is great and the plastic is sturdy. Sadly, it did not hold up well after a cycle in the dishwasher. The lid does not thread onto the cup securely without significant effort. If you manage to secure the lid, the shaking action mixes powders thoroughly. However, when it comes time to secure the flip cap after drinking from the cup, be ready to struggle again. Don't be fooled by the low price of this cup. Spend a few more dollars for a cup that will function properly without significant effort.

Took forever to come in, I have to beat the lid to stay closed and sealed, I'm not too fond of the plastic mixer that you drop in it, I much prefer metal whisk like balls. They seem to mix your protein powders better. Hard to read the measurement lines on this as well.