Re: Biker with Ear Problem
Yes. Those are filter style ear plugs. The filter out damaging sound waves not block sound waves (ie sticking your finger in your ear). I don't ride without earplugs ever. Never do they affect my ability to hear my surroundings.
OP... You want to find earplugs with soft filters vs hard filters as they fit under the helmet much more comfortable. I don't have experience with any of those brands, so can't comment. I use Alpine Earplugs (with the Race Filters) and they are great. I used to use Eytomotics but the hard filters became uncomfortable. Never had much luck with the DIY custom mold earplugs like in the first link but that's just me.
Earplugs are one of those things where you just got to buy them and test them out. They will be different for each person. I went through many trial and errors before ending on Alpine Earplugs.