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Keep little ones consistently safe while traveling using the Graco Nautilus Harness Booster Track. This top-rated Nautilus 65 3-in-1 harness booster can be adjusted as a child grows into different stages from toddler to youth. The Graco harness booster is designed for children who have grown into the forward-facing position. It secures the child in a five-point harness when the child weighs between 20 and 65 lbs. The harness booster seat then converts into a belt-positioning booster to accommodate a weight of 30 to100 lbs. Finally it becomes a backless booster seat as a child grows from 40 to 100 lbs. It features an extremely strong steel-reinforced frame for added protection and long-lasting use over a period of several years. Soft padded energy-absorbing foam is built into and throughout this seat.