I've started running again, so I'm looking for a reasonable set of headphones to use while out running. While sound quality would be nice, I'm more interested in phones that won't become a distraction, through popping out. They need to be comfortable, and have no issues with getting soaked if it's raining, or I'm sweating. I'd prefer in ear for the lightness, but would look at over ear phones if not too bulky. And I don't want to pay silly money, as these will purely be used while running.