And they are, indeed, as overconfident as advertised!
If you've got no idea what this is, you should take a look at the Kickstarter page for the Bike Balls Bicycle Light.
It's a flashing bike light. In the form of a set of balls. That bounce around as you ride.
They're surprisingly firm in the hand. And quite bright! I'm quite happy with the purchase. More rear light is always good.
Did you order a set? How do you like them? Let me know in the comment section!