[starry12345]

Couldn't tolerate them and couldn't find ways to tolerate them. Others may get better mileage - if they don't mind the possible seller issues.

Were the rings not soft and/or thick enough?

The Noogleberry rings? They weren't large enough and I couldn't really fit them on the Stwics domes since there's not a "lip" to them. The insertion space is on the inner sides of the rings instead of the top or bottom.

Otherwise, the material felt soft enough. I don't think I'd try them with the hard plastic Noogleberry domes though. I would want them a bit thicker since they sit in the middle of the ring.

good to know you have been refunded from Amazon. yes, it is better to buy from Amazon for the customer protection. 
I fit really well in the Stwics and they hold pressure perfectly for me. I bought other hard plastic dooms before and they never fit me. May it does not fit all body shape/breast shape