Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor fit, low durability, fair sound.

I love Senheiser and have several of their headphones. But, this one is questionable. The design is not as good as one would think, although it is intriguing. Sound is so-so, bass is weak. After a year of use the plastic coating came off, and the right ear bud stopped producing sound. I am a runner and use my headsets several times a week for an hour or two each time. This one does not hold up.