Hey @LadyBurger, I hope you are doing well.
I have found WhaleBox (found on Amazon) to be really reliable. The reviews on them are really great as well. I had one for my Wifes S10 but not for my S10+. The case for my Wifes S10 worked as described and I'd guess that it is as reliable for the S10+.
Here is a direct link to the case for the S10+:
I hope this helps! Have a great rest of your day. Catch some waves and be sure to stop back with some cool water pics!