This is the 2nd pair I command, he is simply the best generic caps that I've tried to date to the motorcycle. Contrary to what I have previously tested in other brands, it is not a simple overall sound attenuation. They have a very good wind filtering level while keeping the motor (I hear up to about 110 km / h), horns, and other useful sounds for driving. Attention, the plastic sleeve is relatively long; So we must push them to keep them in place of fit of the helmet (but I think it also depends on the ear canal of everyone). Longevity is good, I kept the previous pair 1 year and a half before changing (daily use 20 000km / year).
I advise any biker who wants to protect his hearing, while maintaining a satisfactory level of interaction with the road environment.