What is a harness booster car seat?

How to choose a Harness Booster Car Seat

A harness booster seat is a type of car seat that combines the features of a 5-point harness system with a booster. Harness booster car seats are designed to transition with your child’s growing body in mind – from toddler to a big kid car seat.

Use the integrated 5-point harness until your child is big enough—at least 4 years old and 40 pounds—to buckle up using the vehicle seat belt. Belt-positioning guides ensure a proper fit in booster mode, every time.

Explore MyFit® 5-Point Harness Booster Car Seat

Chicco MyFit Car Seat MyFit
38"-57"
25-100 lbs
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Harness Booster Car Seat Checklist

Keep your growing toddler comfortable and content in a big-kid style seat that’s equipped with the reassuring security of a five-point harness.
Maintain five-point harness protection for as long as possible with a harness booster seat that converts; you choose when to transition to belt-positioning mode. ( Before you transition, make sure your big kid is at least 4 years old and mature enough to buckle in using the seat belt )
Free up your convertible car seat for a younger sibling without rushing big brother/sister to the vehicle seat belt before you’re ready.
Keep in mind that Harness + Booster car seats from Chicco do not have a removable backrest to create a backless booster.

Harness Booster Car Seat - Frequently Asked Questions

Make sure your big kid is at least 4 years old, between 38-57" tall and at least 40 lbs in booster mode You know your child best, so don’t make the switch until you’re confident your growing child will sit still and safely without a full harness.

Measure your backseat or check the exact specifications of your vehicle to know what size harness booster seat will fit in your vehicle. Some retailers might allow you to test the fit of a car seat before purchasing but most have displays that allow you to check out the car seat in-store to research the features that make installation simple like bubble level indicators and multiple recline angles.

Harness booster car seats are designed to transition your child from toddler to big kid car seat as your child grows. Harness booster car seats are used for kids who weigh at least 25 lbs and are at least two years old and as a belt-positioning booster, for kids weighing up to 100 lbs and around 8+ years of age.

A car seat’s expiration date varies by the type of seat. You can find the expiration date for your Chicco car seat located on the underside of the car seat or on the car seat base, printed on an adhesive manufacturer label.

Moving up to a booster seat means you are transitioning your child to use the vehicle safety system. The booster seat helps to make that job achievable by helping your child fit the vehicle seat belt. Seat belts are made to fit adults so the booster seat “boosts” the child up which allows the lap belt to go over the child’s hips and the shoulder belt to go over their collar bone allowing contact with the strongest part of their bodies.

A few tips when installing your car seat:

1. Read the instructions and check out the installation video.
2. Do not over tighten the lower anchors, this could cause the seat back of the booster seat to ride forward.
3. Make sure the seat belt guide is just above your Child’s shoulders for a comfortable fit.

If you still have questions please contact customer service and we will be glad to help you with installing your booster seat.

The booster seat helps to make that job achievable by helping your child fit the vehicle seat belt. Seat belts are made to fit adults so the booster seat “boosts” the child up which allows the lap belt to go over the child's hips and the shoulder belt to go over their collar bone allowing contact with the strongest part of their bodies.

So when is it time to move from the booster seat to the seat belt? There is a simple test for that:
1. Have your child sit with their backside all the way back
2. Do their knees bend at the seat and feet touch the floor?
3. Does the lap portion of the seat ride across their hips?
4. Does the shoulder belt portion lay on their collar bone?
5. Will your child stay in the correct position the whole ride?

When your child/tween meets all these they fit the seat belt and can ride in your vehicle's seat belt moving forward. Your child may fit differently in different cars so make sure you test them in each of your vehicles.