The legendary Britax Marathon convertible car seat is renowned for safety, comfort and convenience and for the ability to keep your child in a harnessed child restraint up to 65 pounds. Unique features including a sculpted base, push button release LATCH system with patented Versa-Tether, and built-in vehicle belt lock-offs, make a tight installation in your vehicle quick and simple. The tangle-free polyester 5-point harness helps to effortlessly secure your child every day. The Marathon also offers a patented HUGS system, belly pad, and a plush & washable seat cover for that ultimate comfort experience for children rear-facing from 5 to 33 pounds or children forward-facing from 1 year old and 20 to 65 pounds.