Suffering from hyperacusis, I use a lot the earplugs. So far, I was taking foam plugs. They have several drawbacks: they are not always easy to put on, they hold evil in the ear, after a while, and blood pressure often feel, not to mention the discretion of neon colors. With this product, I find no problem: a quarter turn and they are in place, effective against noise, discrete and remains in the hole. I also buy PartyPlug, the same brand, going to the movies. These are the same characteristics with in addition, a hole in traffic to let the noise but attenuated.