The ideal double stroller for parents with children of different ages. Aria Twin's "60" side accommodates a car seat, and the "40" side is comfortable for an older child. Yet it fits through standard doorways. Perfect! Peg Perego's Aria Twin 60/40 is the ideal solution for parents with children of different ages. This innovative, side-by-side system offers a unique split-seat configuration. It's Travel System-compatible, so our Primo Viaggio SIP 30/30 car seat (sold separately) can be attached to the "60" side with the stroller's retractable anchors, while the "40" side has a comfortable seat for big brother or sister. And as they grow, the older child can sit in the "60" side and younger one can use the "40" seat. The stroller fits through standard doorways and has dual harnesses, hoods and child trays with cup holders. Rear wheels brake effortlessly with one hand and release with a simple push of a button.