These things are absolutely ridiculous. I came to own them sometime in 2017. They're intended to be used as place mats, but they are in fact a complete deck of 52 plus jokers. Shuffling them is a task that is much easier with two people.
It doesn't quite reach the heights of Penn & Teller's "biggest card trick ever," but it's pretty huge.
these are the largest cards I've ever seen on the consumer marketplace.