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Using One4Life Slim in booster mode? The shoulder belt holder helps guide the vehicle belt, so it stays in the right place across your child’s shoulder and chest. Just route the shoulder portion of the seat belt through the holder on the buckle side before buckling. Always refer to the instructions in your user guide. 🎥 Tap to watch the full how-to video. | Britax
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Britax One4Life vs One4Life Slim — both grow with your child from 5 to 120 lbs, offering rear-facing, forward-facing, and booster modes in one sleek design. The Slim stands out with a narrower 17.5” width, making it a great choice for smaller vehicles or fitting three across. Both models include cup holders, ClickTight installation, SafeCell tech, and a steel-reinforced frame — so safety and convenience are never compromised. Same trusted features, just a slimmer fit. #BritaxOne4Life #One4LifeSl
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