How do you make .tar.zip compressions?

[Christopher]

How do ya?

Just zip it up and save it as a .tar then zip it up again and save it as a .zip???

[Coolin]

I've heard of a tar.gz...
But a tar.zip... I've never heard of.

But basically, one would tar a file and then zip up the tar.
But this is just stupidly redundant.