Comfy and Reliable Earplugs
Though they weren't 3M brand as advertised (The packaging says 'Aearo Company?') they do the job very well.
I live next to some very noisy people, and these let me sleep - and they last several nights, rather than other brands which are deformed and can't be used again after a couple of nights.
My only criticism is that they're a bit smaller than I'm used to, but that might just be me - they still work. Would definitely recommend : )