Good value for money, the battery life doesn't last as long as other reviews mentioned elsewhere. The quality of noise cancelling is ok. It works really well with telephone calls. Good sound quality.

So are these the best ANC headphones - no. They can not compete with the bigger brand names. But at less than $85 when I purchased, they are half to one third of the price of the best that Sony or Bose offer.
For the price they offer good value. Decent sound quality and better that average noise canceling for their price.

You normally get what you pay for but in this case you probably get a little more than you might expect.