The body of the Firefly used the classic butterfly shape Tigershark halves, but with a big difference. Some people like Glow in the Dark. Some like light up yo-yos. The Firefly was both. I think the only Glow in the Dark Light up yo-yo that I've ever seen. Very unique and fun.
The Firefly played well too, but the light up "kits" inside the yo-yo were a bit buggy. They needed frequent adjustment to light up properly.
