Apparently, someone spilled lemonade on the Blue Man Group and created this green man group that you see here.
Actually, this is the Video Green Full Cover Suit, and it is designed to be used with a Chroma Key video effect so that you disappear. It’s how they do the invisible man trick that you see in movies.
So if you have an idea to do some invisible man effect for your next YouTube post, this is probably needed for the special effect. That, and a good green screen.
I have never used one of these, but I’m sure that you have seen several movies with this green suit in action. I believe that Andy Serkis had to wear one of these when he played Gollum for the Lord of the Rings movies, but I remember that his was blue for the motion capture. I also remember watching a making of Cats and Dogs feature that showed that at least three guys in green suits were on hand for the special effects. So when you see scenes where cats and dogs are flying through the air, then it may just be a few guys in the green suits holding it up.
Well, you can get this green suit for about $225, and they are available in the aforementioned blue. They also come in two sizes, but my Source does not say what sizes they are.