The Besafe iZi Up X3 Fix is a high-back booster seat, designed to carry children weighing between 15kg and 36kg (around four to 12 years old), forward-facing, with the seat secured using the Isofix mounts and the child secured using the adult seatbelt, or with both child and seat secured using the adult seatbelt. Find out how this seat compares with the rest in our test.
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