CYBEX GAZELLE S 2 SECOND SEAT BLACK MOON BLACKAs your family grows, convert the Gazelle S from a single to a double stroller with a second full size seat to allow two children to ride at the same time. Each Gazelle S seat can be used in parent facing or forward facing mode and can be attached on either the strollers upper or lower positions. Easily converts your Gazelle S from a single to double stroller without additional adapters Full sized seat supports a child up to 50 lbs. One Pull Harness: