First, I want readers to know this review required actual research. What do you call the double dots over a vowel? Well that depends, for one thing on whether you're talking about German (umlaut) or English (diaeresis). They are not the same thing, a fact that took me wääääääääy too long - and by that I mean at least ten minutes - to figure out.
In any case, I give you... the Cäk tumbler with n'ICE balls. Not just n'ICE balls, but blue balls. So don't say I never give you anything. The Cäk is, in fact, a very nice double-wall insulated tumbler, holding 30 ounces of your favorite hot or cold beverage, without sweating and without spilling thanks to an effective o-ring sealed lid with sliding drink slot.
Aside from the name and the oddly pleasing color selection, the Cäk provides a genuine advantage to those wishing to stay chill. And this brings us to the curious case of the n'ICE blue balls. A pair of such, to be precise. Very good sized at 1.5 inches in diameter, and freezable, and best of all these balls impart absolutely no taste. We have in fact sampled these balls, in our mouths, and can confirm their tastelessness. Just keep them out of reach of children and pets, because... well duh. The things we do for you, our dear readers.
So, to sum up: if you're looking for a large, colorful Cäk that comes with a pair of n'ICE blue balls, there can be only one. At least if you're looking for a high quality unit that is reasonably priced by today's stainless steel vacuum tumbler standards, and at the very least a guaranteed conversation piece around the campfire.