Baby Jogger's Q-Series Single is a solid, no-nonsense stroller designed for running, jogging, or around town. The stand-out feature of this jogging stroller is the amazing folding mechanism - grab a strap in the seat, and lift up. The entire stroller instantly collapses into a light, tidy bundle, ready to be stored away in a closet or dropped into the trunk of your car. Safety features ensure that the stroller will not collapse inadvertently.