I called the pattern a https://www.ravelry.com/drafts/patterns/9765583/edit?step... and it can be used as coaster, yes, as it can protect your furniture from heat.

But it was inspired by some of my colleagues at work (and also my own experience) and is meant to be used to protect your hands from your hot lunch when you take it out of the microwave at work and have to work back the your dining table. PLUS you look stylish doing so.

It can also serve as a dishcloth if needed.