This is a fabulous product
This is a fabulous product - worked very simply and as expected and as advertised. When clean, the liquid level markings on wall are clear. For 2nd and subsequent use (if not cleaned) markings are difficult to see, so one can overfill. Because it is such a great frother, it overfills. Manufacturer might want to duplicate same level marks on OUTSIDE of container so one has an idea of levels. User: Just be aware that you can easily overfill. Would buy again, and would give as a present to others.