Also, in the picture it look like it's opaque, but it's actually a clear container and the blue is true to color on the picture.

This is a great container to have clamped to the music

First, you can’t quite see in the picture, but the cup has markings on it for the volume of water, with markings at 30 mL, 45 mL, and 60 mL, as well as at 1 oz, 1.5 oz, and 2 oz