Bests & Worsts Reviews from Amazon

It does exactly what it says. It has clear instructions of how to fill the compartments to what level to prevent spilling, you just keep it in the freezer and anytime you need any drink cooled quickly without dilution, this does the job. For those not fully familiar with how it works, what it's accomplishing is trying to surround your liquid with as much ice-behind-metal as possible. So, it has a center chamber of ice behind the metal, then and outer chamber of ice. The inner chamber fits inside the outer with about a cup's worth of space that's between the inner and outer chamber. This exposes your liquid to the greatest surface area of super-cold metal that they can, and since your liquid is only touching metal, and not the ice itself, it doesn't matter the temperature of the liquid poured in. You can pour in boiling water and while it may end up melting a bunch of the ice behind the metal, none of that water will mix with your drink. So, whether you're chilling a wine, dropping hot coffee to cool it off, or just wanting to rapidly drop the temp of that fresh lemonade you made without making it watery, this will get that done.