Click sleeves are the only things I have been offered, other than custom molds. I think the issue is kind of hit and miss using off the shelf generic products. If the fit your ear, then all is good. If they don’t then all is not so good. Here is what they look like. I have tried small and medium and settled on small. They are kind of oval shaped and come in vented and closed. But the closed still has a small vent.
