Alpine SleepSoft Reusable Sleeping Earplugs

They work OK but have issues

Firstly, you need to use the little red tool to get them into your ears properly. After that, they needed a gentle push to seal in my ears. Unfortunately, the tips of mine ripped off during the night. This means they became hard to remove so I can no longer use them. The idea of using a filter rather than solid material is good to prevent completely sealing the ear (and mitigate against hearing changes in the long run from using ear plugs) but the execution needs work.

Very comfortable

These are effective and comfortable.

Very good