This nicely-colored wheel is a guide to removing stains on your car's upholstery. It can help you clean off grass stains, ice cream, and tar, but I don't see vomit listed here.
This measures 5 and 3/4 by 5 and 1/2 inches. I really like the colors on this one. That's the main draw for me. Plus it shows how to remove blood, making it a very handy wheel indeed.