The Q-Series Stroller has all the great features that you expect from a Baby Jogger Stroller. The Q-Series Stroller is simple, effortless, quick, and convenient. This Stroller has the patented Baby Jogger Quick-Fold technology. The Q-Series folds in half with one simple lift of a strap in the seat. The Q-Series also has quick release rear wheels for even more compact storage. The 16 inch tires with puncture resistant tubes and aluminum wheels make the Q-Series perfect for use in all types of terrain.