The Z4 measures just 20 inches wide, perfect for adventures where space is at a premium. The streamlined design of the chassis makes maneuvering through crowds easier and more convenient. The telescoping handle accommodates users of different heights and the hand-sewn eco-leather bar adds a touch of elegance. The wheels have a suspension system and 12 ball bearings, which means they are 30% easier to push and can take on different surfaces. The Z4 chassis is travel-system compatible with the Primo Viaggio 4-35 Nido Car Seat (sold separately). The seat is detachable, reversible and can be folded right on the chassis.