Compatible with CYBEX Gazelle S 2 and eGazelle S strollers Converts the compatible single stroller into a double stroller to seat two kids at the same time Full-sized seat is suitable for child from six months up to 50lb. One-pull harness system lets you easily fasten your child in the seat with one simple pull Separate back and leg adjustments allow for multiple configurations, provide more flexibility in finding a comfortable position for your child Extendable XXL sun canopy featuring a mesh window and a UPF 50+ rating offers superior protection against sunlight Seat unit reclines to a near-flat position for added versatility Removable bumper bar lets you easily get child in and out of the seat