Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great sound, poor build quality

I've now had four pairs of these phones (primarily because nothing else is available that works). They have great sound when they don't slip out of your ear canal (how wonderful if they had some way to keep them from ripping out of your ear canal during a flip-turn or push off). My chief complaint is that they all fail w/in about 3 weeks of use (I swim about 3000m a day, five days a week). Dissecting them shows that the internal cables are hair-thin and have all broken from metal fatigue. I've even tried reinforcing the cable at points where it bends (near the jack) with electrical tape, but that just moves the fatigue point to the end of the reinforced point. Come on folks, use decent cabling.