Small, colorful, cute and practical. We have always had the problem that fast no one knew more at celebrations with many guests, who owns what glass. That's why we bought this glass markers. Now we have tried them at a garden party. You haten quite well to the glasses, as long as one does not come to the small suction cup that keeps them on the glass. If you as a time coming up, it popping off. That was in the garden not so funny, especially in the dark abens as the glasses were cleared together, we had some looking. There have all been found again, but only intensive searches goodness. In the apartment you can find them again probably faster. Therefore you can use without concern them there.