Although I have Bose A20 I typically opt for my Clarity Aloft headset. I wasn’t a fan of the foam earplugs for continued use and eventually came across a company that does custom ear plugs that will fit CA headset. https://www.bigearinc.com/.
I have zero affiliation with BigEar other than I’ve been using the ear plugs for a little less than a year and, with regular cleaning, look and perform like the day I received them. Customer service is great. I searched forums and didn’t see BigEar mentioned.