CYBEX Aton 2 Infant Car Seat offers your baby a plush, comfortable environment, while making it easier on you to use them every day. Weighing in at 9 lbs, the CYBEX Aton 2 is one of the lightest carriers on the market. The Aton 2 takes safety and comfort seriously with the use of Linear Side-impact Protection (L.S.P. System), which can reduce side impact forces by up to 25% when used properly*, a Load Leg base which helps distributes crash forces to the vehicle floor and away from the baby in the event of an impact and a UPF 50+ rated sun canopy. Measurements: L 25 x W 17.25 x H 15.25-21 inches Weight: 9 lbs. off Base Use from Birth up to approx 18 months, following the directions in your user manual *when compared to the same car seat without L.S.P. extendedSensorSafe is compatible with most vehicles 2008 or newer with an OBD II port. For detailed information on mobile phones and vehicles compatible with SensorSafe, visit https://sensorsafeapp.com/device-compatibility.htmlUltra-lightweight: weighs only 9 lbs. for easy carrying and installationLinear Side-impact Protection System absorbs up to 25% more impact forces in a collision*Load leg base stabilizes the car seat and can reduce crash forces by up to 50%Removable newborn insert provides support from 4 to 11 lbs.