It has a 2-cup capacity and is dishwasher-safe and BPA-free. The silicone disk inside acts as a squeegee and scrapes off any leftover residue. It also comes apart completely for thorough cleaning.
Promising review: "This is the greatest kitchen tool ever! I cook and bake often and was forever having to first dig for, then clean endless numbers of measuring cups; I actually had three sets. No more though. I just need this one extremely well made, adjustable measuring cup. It works perfectly for me for all kinds of things, such as flour, butter, syrups, dressings, oils, etc. If I am baking, I will first use it to measure the dry items. I then just wipe it out with a paper towel and measure out the butter, etc. This way involves less washing. The suction is as effective as day one, and the units of measure on it are clear and not at all faded." —Gabriella W.
Get it from Amazon for $11.99.