Instruct: Classify Amazon reviews into positive or negative sentiment
Query: comfy and great sound.

I haven't had any problems with these clip ons. I bicycle three to four hundred miles a week and have found them all day comfortable and great sounding. They don't stick too far into the ear as to obstruct all outside noise, which is handy to hear traffic. They even stood up to a few pretty heavy showers during rides. Works for me.