Looking for recommendations for Bumpher or similar products….but…

My wife and I prefer the vac-u-lock harness and I would like to get her something like a bumper. It looks like it would be possible to put the bumper under the harness but then there would be nothing to hold it in place. Has anyone recommended a product like this? I would like it to provide comfort so she doesn’t hit the base and also provide her with extra stimulation. I am willing to modify the bumper if it makes sense.

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