In order to offer optimum levels of safety for your little one, the Nautilus has fully adjustable height positions to accommodate the continual growth of your child, and comes equipped with energy absorbing reinforced side impact protection wings and a padded head support. From 9-18kgs (Group 1), the Nautilus is to be used with the built in harness (with padded harness protectors) which is designed to grow with your child, leaving no need to re-thread the harness at any stage. From 15-36kgs (Group 2,3) the harness is removed and the Nautilus is to be used with the vehicle’s standard 3-point adult seatbelt, which is easily guided into the correct position with Graco’s intuitive (colour coded) seat belt routing system and added lock-off mechanism for safe and secure installation. The Nautilus also splits down (by removing the backrest) to leave just a basic booster for prolonged use. The Graco Nautilus Elite offers parents exceptional value for money and more importantly added piece of mind when travelling with your most precious of cargo.