Board Thread:Questions and answers/@comment-32600941-20171009060533/@comment-27306930-20171009143319

That's correct, they are just called "Koosh" because of the design of the head. There are a few different types on Amazon now, quite reasonably priced. And according to sellers on eBay, there are Gen-4 versions available. I'm not sure I believe that based on the pics, but hey, I've been wrong before.

Happy hunting !