Peg Perego is getting into the convertible to a double stroller game with the introduction of the Jumper seat for the Skate Stroller System. The Jumper seat is designed to be used by children six months and older while a newborn rides in the the stroller seat or a Peg-Perego Primo Viaggio SIP 30/30 Infant Car Seat. The seat costs  and can be bought here.