Cons: Sound only okay, headband is badly designed. It will press against the top of your head while it stretches to fit over your head. Uncomfortable and always leaves your hair looking like you just took a really restless nap. And this looks extremely awkward in public, so don't wear it out.
Summary: I bought these to backpack round India. They are light and take up little space. They don't cancel out all noise but nor do they claim to. The quality of sound is pretty good for their price range and comfortable to wear. I didn't want to spend a fortune in case I lost them or they got stolen. I'm pleased with my purchase and for relatively cheap headphones do the job on the beach or when on buses and trains.