Highs are very rolled off and the OE2i barely qualifies as hifi when some treble boost is added. Below the treble the sound is pretty good and the bass satisfying, although the bass is slightly less than what is commonly considered neutral. Style, fit and comfort are great, and folding up into a tiny 5x5 inch case they are very portable. They also wear around the neck all day with no bother. They seem durable enough to last at least a couple of months, but only then if you're very careful with folding and unfolding them.