Review on Hydra Cup OG Shaker Bottles 6 Pack - Max Value 28-Ounce Blender Set, Protein Shaker Cups in Vibrant Stand Out Colors by Mark Repp

The cup itself seemed very strong and high quality but the lid is not! The very first cup and lid I got, I filled it with water, shaking it as it came with a mixing ball and water splashing everywhere. Some covers appear warped, but they are all very flimsy and cheap. They were sent in a clear plastic bag and then placed in another bag by Revane. So I'm pretty sure shipping didn't help. I strongly recommend spending a few euros more and buying a well-known brand.