$1.69 shipped 3M Ultra Fit Reusable Corded Earplugs, OSFA, Blue, One Size Fits All w/ Prime @ Amazon
https://www.amazon.com/dp/B075D7DYVL
$1.69 shipped 3M Ultra Fit Reusable Corded Earplugs, OSFA, Blue, One Size Fits All w/ Prime @ Amazon
https://www.amazon.com/dp/B075D7DYVL