If you don't like sticking hunks of silicone and foam into your ears, your other option for shutting out background sound while you tune in to your tunes is a set of noise-canceling headphones. JVC's HA-NC250s are able to block out 85 percent of noise with cancellation circuitry that runs on a single AAA battery. But what's cool is that these 'phones provide sound isolation even with noise-cancellation turned off, thanks to an extra layer of protection as well as better sealing. The HA-NC250s also include a four-foot detachable cord, adapter for plugging in two sets of headphones, and a ?-inch adapter for connecting to home-theater components. They also fold flat and come with a carrying case so they shouldn't take up too much space in your carry-on. Look for these cans to hit in August for $200.
