If you like the legendary Britax Roundabout and Marathon, you are going to love the Britax Decathlon convertible car seat! The Decathlon has been designed to take our renowned focus on safety, comfort and convenience a step further. Unique features including the 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 and push button harness adjuster help you to effortlessly secure your child every day. Achieving the ultimate in luxury and comfort, the Decathlon offers a 3-position crotch strap, patented HUGS system, belly pad and a plush & washable seat cover. The removable toddler head pillow and infant positioning system for newborn babies provides a comfortable, adjustable fit as your child grows. The Britax Decathlon is the ultimate convertible restraint for children.