I was wondering if someone here would be able to give me the reference to some good earplugs to wear when studying at home. I want to block out as much sound as possible.
I am currently considering the Sensaphonics ER-20 Earplugs (
http://www.sensaphonics.com/er20.html). Do you know any other good, reusable and comfortable earplugs with a higher noise-reduction rate?
Also, what NR rating would you consider to be sufficient for flights, etc?
Thanks!