The Primo Viaggio All-in-One gives you safety and comfort throughout all stages from birth to booster. Thanks to its adaptive design, the Primo Viaggio All in One is used from birth up to an age of 10+ years. As your child grows, adjust the 12-position headrest & harness in seconds to create the perfect fit. When it is time to transition to a booster, simply tuck the harness into the built-in storage compartment. Recommended for infants 5-50 lbs rear-facing, toddlers 26-65lbs forward-facing, and kids 40-120 lbs in booster 100% Flame Retardant Free keeping your child safe from harmful chemicals. Fabrics and foams are developed without alternative materials that do not use any added flame retardants, while staying compliant with fire- safety standards. Extra leg room. Stay rear-facing longer with the extendable anti-rebound bar, giving your child 2 inches of extra legroom The integrated anti-rebound bar enhances protection in case of a rear collision. Easy Tight Latch System, making install easy and effective. Fits 3 across in most vehicles Color coded belt route making install simple.