I was at the Iron Pony the other day getting a new helmet because my old helmet was getting drafty, and the helmet lady was trying to sell me a Shoei because it's quiet, and I was like, I'm not concerned about quiet, because I wear ear plugs all the time because the wind noise is ridiculous above 50mph (on my bike with just a Puig race screen) and the lady was like it's illegal to wear ear plugs, and I couldn't believe it. I ended up examining all of the helmets looking for shield seal, vents, fog free features, and eventually walked out with the Scorpion EXO-R710. The seal on the shield and the lack of fogging is surprising. Anyhow, I was shocked when I found that it really is illegal to wear ear plugs while riding.