The KidRunner is a stroller that attaches to your waist so you can pull it behind you. Kind of like a trailer. It’s designed to handle the up and down motion of running so your kid isn’t jostling around back there while you’re getting your exercise on. Smart! Want one of your very own? They’ll be available later this year. As for me, I’m gonna pass. Running’s not really my thing. I don’t do it unless I’m being chased. And even then, I basically give up after a few yards and accept my fate.