Koriko Weighted Mixing Tin -  Erick Castro from Rickhouse in San Francisco says: "I would be happy to pay more money for them, but the fact they are so inexpensive, makes them even better... I love how tall they sit in the tin, because they allow the ice cube that much more distance to travel on each shake, which I think contributes to a better froth and texture on all drinks, but especially on fizzes and flips. Plus they seal on their own, without force, so you never ever have to slam them shut or smack them open. I still tend to do that, but mostly for aesthetics rather than function. But that instant seal, makes them easy to open. All in all, I love those tins, and I recommend them to anyone."