Booster car seats

Move up when the fit is ready.

Choose the next step: keep an internal harness longer, or move to a dedicated high-back booster when your child can sit correctly for the whole ride.

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An older child riding in a high-back booster with the vehicle shoulder belt across her chest
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Two clear booster paths.

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Know this before you move up.

When should a child move from a harness to a booster?

Keep using the forward-facing harness until the child reaches that exact seat’s stated height or weight limit. A booster-ready child must also be able to sit correctly for the entire ride. Review NHTSA guidance and both manuals.

Harness-to-booster or dedicated high-back booster?

A harness-to-booster starts with an internal five-point harness and later converts. A dedicated high-back booster has no internal harness and uses the vehicle lap-and-shoulder belt.

What does correct booster belt fit look like?

The lap belt should lie low and snug across the upper thighs, not the stomach. The shoulder belt should cross the chest and shoulder, not the neck or face. A belt-positioning booster requires a lap-and-shoulder belt.

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    Booster seats and harness-to-booster seats are designed to keep older children safe and comfortable as they transition out of car seats. Booster seats are intended for children who have outgrown their forward-facing car seats but are not yet tall enough to use the vehicle's seatbelt alone, typically between 4–10 years old and 40–100 pounds. Harness-to-booster seats offer a 5-point harness for younger kids and convert to a belt-positioning booster as they grow, making them ideal for extended use. Always check the manufacturer’s height and weight guidelines to ensure a proper fit.