Summary: The sound quality was very good, and the zip prevented them from tangling, though the lower part of the wire did tangle, but nowhere near as badly as normal headphones do. One thing I did notice is that they produced something of a 'stethoscope effect' where the sound of anything touching the zip part would be amplified when you were wearing them, but I got used to it after a while.
Summary: Was initially pleased and nearly bought another pair but fortunately did not. Within 3 months and under 10 uses, one side of the headphones (left ear side) has stopped working and no idea how to contact the manufacturer under warranty. Seems I will have to put this down to experience and stick to major brands.
Summary: Main reason I buy these is the tangle free convenience, OK sound no problems, not over keen on the woven fabric outer layer, would prefer plastic but all of the ZIP type headphones use this for their flex.