The AfterShokz Aeropex Open-Ear Wireless Bone Conduction Headphones ($160) are so good, two of our editors recommended them.
"Running safety is huge for me, so I was excited when AfterShokz sent me these bone-conduction headphones to try out. They sit just outside your ear and transmit sound through your cheekbones, so you can hear ambient noise like cars, bikes, and other people. They're far and away my running headphones of choice." — Maggie Ryan, assistant editor, Fitness.
"I have weird ears, apparently, because earbuds are constantly falling out and I always have to readjust them while I'm running. With AfterShokz, which sits right above the ear and transmits sound through our bones, I never run into that problem. Plus, I can hear all the traffic around me while I'm running, and that makes me feel really safe." — Sarah Wasilak, editor, Fashion.