Travel systems are 3-piece stroller systems that include an infant car seat, stroller and car seat base. These strollers, like the Target-exclusive Graco Pace in Boden, usually have a parent tray (Can you say cup holders!), child’s tray, a peekaboo window, easy one-hand fold and more. Plus, they truly grow with your baby. This just might be the perfect stroller for your Baby Registry.