Work pretty much as advertised. Sound quality is good, they do isolate (not cancel) sound, they are tangle free, and the material of the cables appears strong and durable. I like the neckband system, which is one of the main reasons for buying them.
The beads used to adjust the length of the loops are loose, so that loops do not stay adjusted for long.
The slider control is too loose, so it is very easy for the volume to go unintentionally out of adjustment and even go all the way down.
Overall, a good enough purchase if you can get it at discount price.