Review on 🥤 Hydra Cup V2: 20-Ounce Shaker Bottle [4 Pack] with Wire Whisk Balls - Ideal Blender for Protein Mixes by Jeff Kersey

I'm surprised people are complaining, they're great, lightweight and dishwasher safe. The quantity and price made us try them out, but after using them we ordered more. They're cheap, big and easy to use! They also don't leak if you tighten the lid and make sure the lid opening is closed (listen for a click). Also, keep your finger on the lid while shaking.