Those look like fun... They're based on heat though, so I seriously doubt there's no damage.. Either that or the "study" they did was flawed and biased.
But compared to most other heat rollers out there, it looks pretty cool. I like that it clips, wich means it will probably stay put even on the most slippery hair. But will i hold all the lenght of some of the users on this board?
I'd imagine someone like Titian with long thick hair would either need ALOT of clips and supertiny sections, or t would all fall out due to weight?