Travel with Baby secure and comfortable in the backseat. The Britax Marathon Classic Car Seat is built for safety. The JPMA-Certified seat features a 5-point harness, 2-piece chest clip and a flame-retardant material. The adjustable harness and buckle closure make for easy in and out, and it converts from rear facing to front facing as your baby grows. Maximum weight: 35 pounds rear facing and 65 pounds front facing.