Yes, the Bugaboo Owl by Nuna is compliant with the latest i-Size safety regulations ECE R129/03 only with the use of the Bugaboo 360 ISOFIX Base by Nuna. For reference, the Bugaboo Turtle Air by Nuna is compliant with i-Size regulation ECE R129/03 with or without the use of the Bugaboo 360 ISOFIX Base.