Pros: Light Weight, Comfortable, Small, Good Sound
Cons: Telephonic, positioning
[I have edited this review after +1 year of near daily usage.]
First off, these headphones are EXTREMELY light. They don't weigh a thing on your head, don't clamp hard at all, and are just generally very comfortable. They sit well and adjust in several different ways to fit heads of almost any size. I have worn these headphones for HOURS and barely notice them! The sound these guys produce is also pretty fantastic, especially the top end. They are clear and airy, and the pads dull a sufficient amount of outside noise. For as small as they are, the bass is more than enough. It's nothing spectacular, but it's definitely present.
These headphones FEEL weak and fragile, as coming with their lightweight portability. It's hard not to treat them timidly, because you feel you might just snap them like a twig. Though the plastic feels high quality, there is definitely not much of it. Another big issue I had was the positioning on the ears; once you get them in the right spots, they stay pretty well, but getting them "balanced" on your ears is a bit of a game. The 3.5mm connecter is pretty beefy, whilst the cable is quite then and light; it's a strange contrast, but it's held up for over a year of portable use. The mids are slightly washed out, nothing terrible, but definitely noticeable.
I bought mine on sale from Best Buy for around $30, however, they typically go for ~$50. If you need a pair of portable headphones, these certainly do a good job. If you can, find them on sale, but they're still worth the typical ~$50.
After +1 year of near daily usage, they have held up more than fine just hanging out in my backpack.
I recommend them!