What is a good brand of concert earplugs I can buy here?

Hey everyone! I’m currently on the hunt for the ultimate jelly donut experience in Tokyo. I’ve tried a…

It’s kind of brown-ish and looks like this: https://upload.wikimedia.org/wikipedia/commons/f/fd/Tea_of_Matsuya.jpg Unfortunately I couldn’t find much about it online

i’ve been looking around online from shops like dospara and sofmap, but prices all differentiate, a used gamerock…