Treated myself post Christmas to one of these based on reviews.
I have used rollers before one of which looks like it is out of a torture chamber and I don’t enjoy using
This one is great as the combination of both rollers allows for more rigidity whilst on the roller and therefore the required areas are easily targeted
It certainly went deep into my back during the 2 minutes required but there is definately an on going improvement
This therefore is not a gimmick or just another variation on a theme.It takes rolling to a new level
If you are thinking about it then I would say don’t as you won’t regret it because its a good investment in your health and training Nick Woodall