Great, unlike many others, it has a mouthpiece that isn’t sharp but nicely rounded, so it’s comfortable to drink from. No powder residue stays in the rounded bottom, and I can even choose the colors. I would appreciate it if they made versions with a mesh as well—when the other household member is still sleeping, I don’t want to shake the spring and risk waking them up.

I've only been using the shaker for a short time, so I can't evaluate the durability of the lid yet, but the protein mixes in it without lumps.

Super shaker, no lumps remain, it's just a pity that they're always sold out because I would like to buy more and they're not available.

All shakers with a spiral mix protein and other drinks perfectly, without lumps. The only minor drawback is that when shaking, a small amount of the drink may seep under the lid. Therefore, after opening, it’s a good idea to be careful not to spill on yourself.