Pros These to me are the hidden treasure of headphones, no one else seems to know about them or like them.
Cons Mesh can get full of earwax/junk which you can't clean completely but on the other hand if the housing came apart these probably wouldn't sound the same.
Summary Cheap, durable and sound better imo than anything below the 100 dollar range. I've broken a pair of these by running and getting the wire caught on a door knob which yanked the wire from the speakers. Other than that I wear them for all listening occasions, working out, running, or just listening to music. Looked on amazon the next day and found them for about $1 a piece so I ordered a few. Superior to skullcandy and sony. They fit in my ear perfectly and don't get uncomfortable. My previous favorite headphones were the sony piiq's which were specifically made for bass and they were good but these are better. I listen to rap, rock, techno, so all things loud with bass and treble. These kick. Try em out they're cheap and they kick.