The Britax Marathon 70 convertible car seat is designed for children rear facing from 5 to 40 pounds and forward facing from 1 year and 20 lbs up to 70 pounds. The MARATHON 70 achieves revolutionary head safety through the use of BRITAX SafeCell Technology, integrated steel bars, and Versa-Tether that work together to minimize head excursion and reduce the risk of head injury during a frontal impact. The MARATHON 70 also incorporates BRITAX Side Impact Protection, offers a no-rethread and quick-adjust five-point harness, multiple buckle and recline adjustments, and an easy access cover and access to belt paths from the front of the seat. A head and body pillow is provided for comfort.