Best High Back Booster Seat with Harness

If you have a preschool aged child or one that is a little older, you may be looking to transition them to a car seat that meets their growing needs. Your child won’t need to sit rear-facing, and then you’ll need something to last them the rest of their car seat days. This is when it’s time to start shopping for a five-point harness booster seat. Use this guide to help you select the right one.

Best High Back Booster Seat with Harness
Name Image Weight (lbs) Weight Capacity (lbs) My Rating
Britax Pioneer Combination Harness-2-Booster Car Seat 21 lbs Forward Facing Harness 25-70 pounds/ High Back Booster 40-110 pounds 5
Graco Nautilus 65 3-in-1 Harness Booster 20.52 lbs Harness 22-65lbs/High back booster 30-100 lbs/Backless 40-100 lbs 4.8
 Cosco High Back 2-in-1 Booster Car Seat 8 lbs Forward facing 22-40lbs/High back booster 40-80 lbs 4.4
EvenFlo Maestro Booster Car Seat 12.7 lbs Forward facing harness 22-50 lbs/Booster 40-110 lbs 5

What is a Harnessed Booster Car Seat?

A harnessed booster car seat is often called a combination car seat. These car seats sit forward-facing in your vehicle and have a five-point harness. Your child can either use the seat’s harness or your vehicle’s seat belts while sitting in the seat. Sometimes these car seats can also be converted to a backless booster seat for much older children.

A harnessed booster car seat should not be confused with a convertible car seat, which also features a rear-facing option. These combination boosters are also not just a typical booster seat because typical booster seats do not include a harness. Harnessed booster car seats were created to fit the growing needs of your child until they are ready to transition out of a car seat.

Because a high-back booster with a five-point harness can only face forwards, they are created for three-year-olds and older. Your child can use the harness until they are tall and mature enough to only need a booster seat. Children are ready to move to the booster seat when:

What You Should Consider In Picking a Harnessed Booster Car Seat

When looking for a harnessed booster seat, you should consider:

Different harnessed booster seats have different expiration dates. Some can last a decade while others may only last five or six years. If you want to make this the car seat your child will use for the rest of their car seat days, make sure the seat won’t expire before your child is ready to be done using it. You may also need the seat for a younger sibling, so having one with a long lifespan is helpful.

If you have a younger child, you will want to make sure you can keep them in a harness as long as possible. According to the American Academy of Pediatrics, this is the safest way for them to ride. Buying a car seat with higher maximum weight requirements will allow your child to continue using the harness longer.

If you are placing this booster seat among other car seats in your vehicle, you need to think about how much room your vehicle has. Some high-back booster seats are designed to fit well anywhere in the backseat, while others are difficult to place in the middle of the back seat. Some booster seats are wider than others, too, so you need to look for a slender one if it has to sit next to another car seat.

Some parents prefer their children to sit in a backless booster as they get older. Backless boosters are easier to carry around which may help your child during a school field trip or carpool. Backless boosters sometimes have higher weight restrictions, so a child can sit in it longer. Some high-back boosters have high weight restrictions, so the backless mode may not be necessary before transitioning into your vehicle’s regular seats.

If you think you want to use a backless booster for your child, you should look to see if the combination seat you’re buying has this option.

Recommended High Back Booster Seats with Harness

Here are some options to consider when shopping for the best high-back booster seat with a harness.

EvenFlo Maestro Booster Car Seat

This harnessed booster seat can hold a child up to 50 pounds in the harness and up to 110 pounds using your vehicle’s seat belts. With a six-year lifespan and a high maximum weight requirement, this car seat should be able to get your child through the rest of their car seat days. It will probably be close to expiration, though, before a sibling gets a chance to use it.

This car seat was made to grow with your child. It has four shoulder harness positions and two crotch strap positions. The EvenFlo Maestro has an auto adjusting belt path to ensure your vehicle’s seat belts fit your child properly. The headrest is also created to give your child a lot of head and neck support. These features helped it receive the “Best Bet” accreditation from the Insurance Institute for Highway Safety.

This car seat comes with two integrated cup holders that have flexible bands. Using the bands, you can keep drinks and snacks from spilling everywhere. This car seat is also light, making it easy to travel around with. With one of the more affordable prices on the market, this is a car seat both children and parents love.

>> Click HERE to buy this booster seat <<

Graco Nautilus 65 3-in-1 Harness Booster

The Graco Nautilus 65 has three seating modes: harnessed, high-back booster, and backless booster. It holds a harnessed child up to 65 pounds and has weight maximums of 100 pounds for both booster modes. It has a 10-year lifespan, giving your child and their siblings time to use it and grow out of it.

The Graco Nautilus comes with an extended five-point harness. With a high maximum weight for the harnessed mode, children are able to stay in a five-point harness longer. This gives your child more time to grow and mature before transitioning to the booster mode. The harness system also adjusts the height of the harness and headrest in one motion, ensuring your child is properly fitted to the seat. The headrest comes with five positions to allow your child to find the best fit.

The seat comes with three recline positions and a seat pad to help keep your child comfortable. It has a storage compartment for your child to store snacks and toys. The Graco Nautilus also comes with a cup holder for your child to keep drinks and snacks in.  

>> Click HERE to buy this booster seat <<

 Britax Pioneer Combination Harness-2-Booster Car Seat

The Britax Pioneer combination car seat holds a harnessed child up to 70 pounds. It converts to a high-back booster for children up to 110 pounds. The high maximum weight limit allows your child to stay harnessed for a long time. It is made with a steel frame and an impact-absorbing base. This seat’s durable model helped it win “Number One Brand in Safety Technology” from the National Highway Traffic Safety Administration. The safety this car seat provides can give parents peace of mind.

This car seat will grow with your child. It has a nine-position harness and two-position buckle, so you will always be able to find the right fit for your child. The Britax Pioneer also has a front-adjusted recline so you can find the right position for it in your vehicle. When it is time to transition to the booster mode, the harness can easily be tucked away within the seat. The seat contains comfortable foam padding and two integrated cup holders. These features will help your child ride comfortably, even on a long car ride.

>> Click HERE to buy this booster seat <<

 Cosco High Back 2-in-1 Booster Car Seat

The Cosco high-back 2-in-1 booster car seat is an affordable combination car seat. It holds children up to 40 pounds in the harness and up to 80 pounds in the belt-positioning booster. The seat provides two shoulder belt guide options to ensure the seat belt fits your child properly. It is also easy to install with a latch system.

The Cosco high-back booster seat is made for growing children. The seats are roomy and also feature comfort-support sides. This makes it a great car seat to take a nap in. The seat cover is machine washable, making it easy to keep clean. It comes with a dishwasher safe cup holder that can be taken on and off. At eight pounds, it is also one of the lightest car seats you can buy. This makes it easy to transfer it from vehicle to vehicle, making it perfect for a carpool.

>> Click HERE to buy this booster seat <<


The harnessed booster car seat is uniquely created for toddlers and preschool aged children to take with them into the rest of their childhood. Finding the right combination car seat will depend on how long you need it for, how many seating options you want, and how long your child needs to stay harnessed.

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