The 8 Oz Ceramic Travel Mug is the smallest size you will generally find. It is mainly used for coffee, since eight ounces of other drinks usually is not enough. But with coffee, especially if taken black, it is a great size.
These cups all come with a lid, that helps keep your coffee hot and also prevents spills or splashing. One of the options has a handle. Some people prefer to have one, while other find cups without handles preferable. The handle is high enough up the cup, that using a cup holder is not a problem.
As mentioned, these tumblers are perfect for coffee drinkers who like their coffee black or who otherwise don’t want a large amount of coffee during their commute. IF you drink tea or another drink, eight ounces may be too small.
I love this size for coffee, because I do prefer it without milk and sugar and I don’t like to have a larger amount. It makes me too jittery. For tea, I would want a tumbler that is not so small.