Material found during oil change
 

Hello - i removed the plastic access cover beneath the oil pan on my 2015 Mazda3 and found the pictured material - i think its insulation of some sort? I found one when I changed the oil a few months ago as well. Wondering what they are, where they are coming from, and do I need to replace them? Any help would be appreciated.
https://cimg2.ibsrv.net/gimg/www.maz...3e6fd0171.jpeg