It's better yes. It's recommended to have some while going to festival, shows or anywhere there will a lot of noise.
Although, there is a way to create earplug that fit your ears and will be better. I don't really know where in netherland but if you search, you'll probably find it. It will be better because you'll have a 100% efficiency with it that a random earplug won't give you. Although, those look nice.
