Category Archives: Booster Car Seats

Booster Seat Age

Some common questions we get are “can a 4 year old sit in a booster seat?” or “can I put my 5 year old in a booster seat?”

First off, don’t rush to move your child to a booster seat before they are ready. If you can safely keep your child in their forward-facing harness car seat for longer, do so.

Your child ideally should be at least 5 years old, although some boosters start at age 4.

The American Academy of Pediatrics recommends that children use a 5-point harness car seat until they reach the maximum height or weight of that car seat.

Once your child has outgrown the weight or height limit of their forward-facing harness car seat, which is generally between 40 and 65 pounds, they can sit in a belt-positioning booster seat.

Every car seat has its own height and weight limits so you need to refer to the manufacturer’s manual for your specific limits.

How to Know When Your Child is Ready For a Booster Seat

So how do you know when your child is ready for a booster seat?

To sit in a booster seat, your child should:

  • Have exceeded the height or weight limits on their harnessed car seat
  • Ideally be at least age 5, although some boosters start at age 4
  • Weigh at least 40 pounds
  • Be mature enough to sit properly in the booster without slouching, leaning forward, or playing with the vehicle seat belt for the entire car ride

To test that your child is ready to use a booster seat, have him sit in the booster seat and ensure that he is all the way against the back of the seat, with his knees bending at the edge of the seat cushion. If he is too small for the booster seat, his legs will stick straight out and he may be slouching, both of which can be dangerous.

How do you know if your child has outgrown his forward-facing car seat?

  • He has reached to maximum weight or height allowed for his seat with a harness.
  • His shoulders are above the top harness slots.​
  • The tops of his ears have reached the top of the seat.

Booster Seat Tips

When your child is in the booster seat, ensure that the lap belt crosses his hips, not his belly, and touches the top of his thighs. Make sure that the shoulder belt lands on his shoulders, not his neck or upper arm, and crosses the center of his chest. The shoulder belt should never be placed under your child’s arm or behind his back.

Always make sure you use both the shoulder and lap belts with a booster seat. Never use only the lap belt with a booster seat. You can use a booster seat until the vehicle seat belt can correctly fit your child without the use of the booster seat.

Remember, each time you move your child to the next seat, there is a reduction in the level of protection for your child, so don’t rush to move him!

Booster Seat Age NY

You should check your own state’s specific law. For the State of New York as an example, booster seats are for children who are 4-8 years old, weigh 40-80 pounds, and are less than 4 feet, 9 inches in height.

Many states, such as California, do not specify a booster car seat age requirement. As long as your child follows the checklist that we have provided above, you can move him to a booster seat.

Combination Car Seats

If your child has outgrown the forward-facing car seat but is not ready to stay seated properly in a booster seat using the lap and shoulder belt, look into combination car seats, otherwise known as toddler booster car seats.

Combination car seats have a 5-point harness that you can later remove and use as a belt-positioning booster car seat. This will provide your child the best protection as you get to keep him in a harnessed car seat for longer. Most children can continue using the harness until they weigh at least 40 pounds.

One of the best combination car seats is the Cosco High Back Booster Car Seat, a 5-point harnessed car seat that converts to a belt-positioning booster seat. The seat protects harnessed children from 22-40 lbs and belt-positioned children from 40-80 pounds.

Other top harnessed booster car seats include the Chicco MyFit Harness + Booster Car Seat and Graco Tranzitions 3 in 1 Harness Booster Seat.

Chicco MyFit Harness + Booster Car Seat, Canyon

Booster Car Seats

There are 2 types of booster seats: booster seat with high back and backless booster seat. They do not come with a harness but are used with both lap and shoulder seat belts in your vehicle.

You can read more about the types of booster car seats here.

Chicco GoFit Backless Booster Car Seat - Shark                    Evenflo Big Kid Sport High Back Booster Car Seat, Rainier

If you’re in the market for cheap booster seats, read our top Booster Car Seats Under $100.

If you’re in the market for a narrow booster seat, especially if you have a small vehicle, check out our top narrow booster car seats.

Narrowest Booster Seats on the Market

Wondering which is the narrowest booster seat 2020 that can fit 3 across in the back? If you are looking for a narrow booster seat, you have come to the right place.

Having a narrow booster seat is helpful if you have multiple kids or if you have a small car. We have provided a list of some of the top narrowest booster seat on the market.

Remember that there are 2 types of booster seats: high back and backless. We have listed the best of each to help you decide which is right for your child.

It can be a challenge to fit multiple car seats in the back row of your car, even if you have a large SUV or minivan. That’s why it is helpful to find car seats that aren’t too wide, so that you can easily fit them into your car.

Top 10 Narrow Booster Seats

The below seats are great if you are looking to fit 3 in a row or if you just are looking for a narrow booster seat for bucket seats.

Narrow High Back Booster Seat

Here are the best narrow high back booster seats for small cars on the market:

Diono Radian 3RXT All-In-One Convertible Car Seat

The Diono Radian 3RXT is one of the best narrow booster seats. It is an all-in-one convertible car seat that accommodates your child in the rear-facing position from 5-45 lbs, in the forward-facing position with a 5-point harness up to 65 lbs, and in booster mode up to 120 lbs.

They are the only all-in-one car seats with a full steel frame, making them one of the safest and narrowest car seat on the market today. The seat is only 17 inches wide, so you can fit 3 of these car seats across in most mid-sized vehicles.

It is narrower than Diono’s other convertible and booster seats. For example, the Diono Pacificia, Rainier and Cambria are all 18 inches wide.

This car seat is comparable to the Diono Radian 3R, which is a little cheaper and has less weight limitation in the rear-facing and booster modes.

If you are parents of triplets or 3 children, you might want to try this popular seat out.

Graco Highback Turbobooster Car Seat

At a very affordable price, the Graco High Back TurboBooster child car seat is one of the narrowest high back booster that fits children from 30 to 100 pounds.

At just 16.5 inches wide, you can easily fit this into small spaces. If you need extra room, you can even fold the cup holders fold into the seat.

One of the best things about this seat is that you can easily convert this to a backless booster so that you can use it for longer as your child grows. This affordable booster seat goes a long way!

This toddler car seat booster features a multi-layer head rest and wide, padded armrests for extra support and comfort. The open-loops belt guides help to position your car’s seatbelt, making it easier for your little one to self-buckle.

Not only is the Graco Turbobooster one of the most popular booster seats, it is also one of the cheapest booster seats. You can typically find this booster seat for about $40!

Cosco Finale DX 2-in-1 Booster Car Seat

Made in USA with American and imported parts, this Cosco Finale car seat is one of the best slim booster seats on the market. Measuring 18 inches wide, it is designed to fit three across in most vehicles, perfect for growing families and car pools.

This slim high back booster seat with harness has extended use in both modes, fitting your child up to 65 pounds in its forward-facing with harness position and up to 100 pounds in the belt-positioning booster position.

The Cosco Finale DX  booster car seat is lightweight and easy to move from car to car, which is great for families on the go.

It features deluxe fabric that is easy to clean and keeps your child comfortable. You can also remove the seat pad, which is machine-washable and dryer-safe. The seat features a reversible cupholder, meaning you can detach and install the cupholder on either side of the seat.

Not only is this one of the best narrow booster seat for three across, it is also very affordable.

Evenflo Big Kid AMP High Back Booster Car Seat

At about 17 inches wide, you can use the Evenflo car seat to fit three car seats across in your vehicle. It is one of the best cheap narrow car seats available.

What’s great about the Evenflo Big Kid is that it can easily transition from high back to a no back booster seat, so you can use this seat for many years to come. It is one of the best narrow car seats to fit 3 in a row.

The Evenflo booster car seat has 6 position height adjustment, which you can easily adjust with one hand. It features dual, integrated cup holders that are built into the seat, which also helps save space.

Maxi-Cosi RodiFix Booster Car Seat


The RodiFix Booster by MaxiCosi fits children from 40-120 pounds. It measures 12 inches wide at its base and 19.5 inches at its widest point, so you can fit 3 across in the back of your vehicle.

It features Air Protect for superior side impact protection around your kid’s head. The RodiFix Booster has no arm rests, which make it easier to get your child buckled in, and it fits well next to wider seats.

Its belt routing system is easy enough to learn that children can buckle themselves in. RodiFix has LATCH connectors that hold the seat in place when the seat is not in use. This prevents the seat from turning into a projectile in the event of a collision. The LATCH is just to hold the seat in place; your child will be secured by a seatbelt.

The seat features front-access recline system, which allows seat and seatback to recline for comfort and better fit to vehicle. This belt-positioning booster also features a multi-height headrest and expanding side wings that grow with your child.

The stylish, premium fabrics are plush, comfortable, and self-wicking to help deodorize and draw liquids away from the skin. The RodiFix is quite expensive compared to many other boosters, but its premium features may be worth the price!

Narrow Backless Booster Seat

Below are the narrowest backless booster seat on the market:

BubbleBum Inflatable Booster Seat

The Bubblebum booster seat is one of the slimmest car seat on the market. This inflatable booster seat is only 13 inches wide so you can easily fit three car seats across the back seat.

It fits children from 40 to 100 pounds. In less than a minute, this blow-up booster transforms from a small pouch to a booster seat for kids.

It is foldable and portable, making it great for travel, car rentals, taxis, carpools, and caregivers. When it is deflated, it easily fits into a handbag or backpack.

This Bubblebum booster car seat can fit in the center seat of your 3-across installation even when nothing else seems to fit.

mifold grab-and-go car booster seat

The mifold booster seat is the most compact and portable booster seat on the market. You can fold it so small that it can even fit into a child’s backpack or your car’s glove box.

It is designed for kids 4 years and up, 40 to 100 lbs, and 40 to 57 inches tall. It fits 3 in a row, even in the smallest cars.

The mifold is great for vacation and travel. You will need this car seat for taxis and car rentals. Not only is it cleaner and cheaper than renting a booster seat, but you get to keep it!

Even though the mifold seat is 10x smaller than a regular booster, it js just as safe! Just because it is small doesn’t mean it is less safe than other seats. The mifold has been safety tested and meets or exceeds NHTSA standard FMVSS 213 in the USA. It protects your child by adjusting the adult’s seatbelt to fit properly.

Graco Affix Backless Booster

The Graco Affix Youth Booster is a slim backless booster seat that fits children from 40 to 100 pounds and up to 57 inches tall.

There is a front adjustment that allows you to easily and quickly tighten the booster to the vehicle seat. There is a secure LATCH connection system that keeps the booster seat steadily in place when the seat is not in use and helps facilitate independent buckling.

Keep in mind that the LATCH is to secure the booster to the vehicle seat while the booster is unoccupied and you will need to secure your child in the booster seat with the car’s lap/shoulder belt.

Cosco Topside Backless Booster Car Seat

The Cosco is one of the top narrow backless booster seat. Its slim design allows you to easily fit three car seats across in the backseat of your car.

The Cosco Topside Booster fits children 40-100 pounds and from 43 inches to 57 inches in height. It gives your child the extra height they need in order to keep your vehicle’s seat belt properly positioned.

It features extra-plush padding, which helps to make long rides more comfortable for your child.

Graco Backless TurboBooster Car Seat

As mentioned above, the Graco Backless TurboBooster is a narrow car seat. It features padded, height-adjustable armrests and hide-away cup holders.

You can purchase the High Back TurboBooster seat and convert it to a backless booster so that you can use it for longer as your child grows. In the backless mode, it fits children from 40 to 100 pounds and up to 57 inches tall.

In conclusion, these are some of the top narrow car booster seats. Read here for more best booster car seats 2020.

Which narrow booster seat 2020 best fits your needs?