This three piece system was named after the unique folding and opening (pop-up) motion the bassinet undertakes, which allows it to be folded completely flat, while still being attached to the chassis. Equipped with a premium chassis, folding bassinet and reversible seat, the Book Pop-Up offers the ultimate in style, comfort and mobility. The Book Pop-Up chassis can accept the Seat Pop-Up, Bassinet Pop-Up or Primo Viaggio infant car seat directly onto its frame. It folds inward, "like a book" with just one hand and is equipped with an adjustable handlebar outfitted with our high-quality "Prima Classe" material. Large polyurethane wheels and ball bearings guarantee a smooth drive, even on the roughest of surfaces. A remote front wheel control allows parents to swivel or straighten wheels without having to bend over and touch front wheels. The Bassinet Pop-Up welcomes your baby with comfort and fashion from the very first days. This innovative bassinet can fold easily with a simple gesture, perfect for carrying and storing. The Bassinet Pop-Up and chassis fold compactly together and stand alone when folded. It includes an externally adjustable headrest and a hood with mesh insert that provides air circulation. Includes a removable mattress and is approved for overnight sleeping. The Seat Pop-Up is a detachable and reversible seat that allows for an easy fold in BOTH rear and forward facing positions. It offers Comfort Recline: The seat and the backrest slide open, creating a comfortable resting angle for the baby. Primo viaggio 4/35 rear facing infant car seat takes the Peg Perego experience in child restraint systems to a new and improved level of safety and design. This car seat will accommodate a baby from 4 to 35 pounds and up to 32" tall.