Sennheiser positions these as "on the go" headsets, which is certainly appropriate (even though you'll like them sitting on your couch just as much). They are surprisingly lightweight, comfortable, and shield the ears very well. Great for airplane travel, etc. Sound quality is quite asthonishing: the EH150s bring out full bass and depth from a little source like an iPod. Amazing. And they retail at around $40. That's a value proposition that can hardly be beat. (4 Stars in Overall Rating because a 5 Stars would be a $500 set)