Have a look at Maui Jim Sugar Beach if you can still find them. They are very light and very low clamping force. But they do have some soft rubber at the end to keep them not slipping off your head. Good luck.
I think the logic there is not that they constantly win against the casino, but more that they only need to get lucky once or twice. They just see that some people, sometimes win and there is no reason that they would not be the winners. Not sure I'm being clear about it but I hope you get my point.
Have a look at Maui Jim Sugar Beach if you can still find them. They are very light and very low clamping force. But they do have some soft rubber at the end to keep them not slipping off your head. Good luck.