Plenty of people like to fall asleep to music, podcasts, or audio books — or would like to, anyway. But how are you going to do that? Not with hard plastic earbuds, that's for sure — they'd kill your ears after a while (if you don't get strangled by the cord first). Not with traditional headphones, either; they'll come off if you turn onto your side. Here’s the ingenious solution: SleepPhones.