It says Star Trek. It flashes. That’s enough to get your geek wallet out right there. It comes with a white or yellow flashing image and there are even Star Trek Enterprise and Star Trek Voyager shirts available. They are 100% cotton and the battery pack comes away for washing it.
It requires a whopping 4 AAA Batteries which are hidden in the lining. Seems like there is no way that wearing 4 AAA batteries is going to be comfy, but then again, this is a Star Trek shirt that flashes. It could have a car battery attached and it would be cool.