Instruct: Classify an Amazon review as either positive or negative.
Query: Low profile stuff. Don't buy it!

This earplug is very disappointing. It has very poor bass response. And it feels uncomfortable when you wear it for a while.I guess this the cheapest Sennheiser stuff. I bought other earphones of Amazon at the similar price. They are much better than this one.So, don't ever buy it. It does not worth it!.