Car seat adapters, such as those available for the Stokke® Xplory® stroller, are not available for the Stokke® Crusi stroller. The reason for this is that the car seat brands which are compatible with Stokke® car seat adapters have harnesses exposed at the back side. This would present a safety concern when such a car seat is used in the sibling configuration of the Stokke® Crusi stroller, as the child seated in the lower seat could grab on to the car seat harness. Everything we do is in the best interest of the child and sometimes that does pose limits to the compatatbility of our products with products or product components from other manufacturers. Stokke IZI Go and IZISleep car seat solutions are not available in the Australian market.