these admittedly dinky-looking headphone give surprisingly good sound . Bass be full and the rest of the frequency spectrum be nothing to sneeze at . since statistically speak you be like most people , you 'll be plug these into either a mp3 player full of badly-ripped , low-bitrate compress audio track or else a crummy portable cd player with a extremely noisy potentiometer for a volume control . buy better than these perfectly respectable headphone would be a waste of money .  the Sportapros fold up too , which make they great for a coat pocket . also , the headband can fold in such a way that the headphone look like `` street-style '' headphone that be oh-so-popular these day . this make they clamp on you head a bit more , but it can not possibly be any less comfortable than any other headphone in such a configuration . I think it look stupid that way , but hey , if that be you cup of tea so be it .  as for noise isolation , these do not offer much . if you really do not want to hear the subway along with you gangsta rap , you should be look at a pair of noise-cancelling phone or better yet in-ear headphone such as those make by etymotic . -lrb- the latter be a few time the price of the Sportapros on the bottom end , mind you . -rrb-  it even come with a fake leather bag that I keep laundry money in . -lrb- keep a set of headphone this inexpensive in such a bag be just scream `` I have ocd ! '' -rrb- bottom line , this be the best pair of portable headphone you can buy for the price . they do not sound worse than the low-end sennheiser in this price range , for example , and they be quite a bit smaller .