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Britax The Britax Marathon Convertible Car Seat is the perfect choice when it comes to safety, comfort and convenience for infants and children of all ages. The Britax Marathon can accommodate children rear-facing from 5 to 33 pounds or children forward-facing from 1 year old and 20 to 65 pounds. The built-in vehicle belt lock-offs are only one of the features that make the Marathon easy to install with the highest level of safety. The Marathon's Versa-Tether system is compatible with the top tether points on newer vehicles, to anchor the top of the car seat and prevent tilting. Combined with LATCH system connectors with a push-button release, these features will ensure the most secure possible installation in your vehicle. Plus, the patented ""floating"" HUGS System is designed to reduce head movement and keep the child's head and neck safe in all situations, and EPS protective foam surrounds your child's head and torso for maximum protection. The Britax Marathon has the widest width of any harnessed car seat that holds children weighing up to 65 lbs. This and other features like the included belly pad and the tangle-free five-point harness with four adjustable shoulder harness positions ensure a comfortable ride for any size child. The plush seat cover is removable and washable, and the Marathon, like all Britax car seats, comes in a wide variety of colors and patterns.