Here’s how to do it:
https://www.youtube.com/watch?v=CCzrrgwFWbU
Here’s where to get a replacement:
https://www.amazon.com/Replacement-Earpads-JARMOR-Wireless-Headphones/dp/B073Q3B332/ref=asc_df_B073Q3B332/?tag=hyprod-20&linkCode=df0&hvadid=242168461154&hvpos=1o2&hvnetw=g&hvrand=11683792377295014666&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9060552&hvtargid=pla-523088154182&psc=1