https://www.etymotic.com/passive-hearing-protection/ https://www.etymotic.com/passive-hearing-protection/ A friend put together a group buy of these at least a

https://www.etymotic.com/passive-hearing-protection/ https://www.etymotic.com/passive-hearing-protection/ A friend put together a group buy of these at least a decade ago and mine are still doing great. They’ve gotten completely disgusting but some isopropyl followed by a warm water wash cleaned them right up. It’s kind of weird that such a relatively niche product is so cheap… I am so happy with them that I would be a repeat customer but the best I can do is promote them a bit since I’ve got no reason to send them another $20 yet.