Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not exactly what I thought.

It's not you.....it's me so I returned them. I'm sure these are fine headphones but I was looking for something that doesn't exist. I would like to find complete isolating / deprivation headphones. Yes the background noises and humming are cancelled out, but I could still hear conversations, etc.The compact design is nice. Getting used to the cord and battery pack may take some creative measures, unless you have a breast pocket. I guess I'll have to go back to the little foam earplugs.