How to Choose a Booster Seat - Includes Links to Helpful Resources

With more states requiring that kids continue to ride in a booster seat until they're at least 8 years old and 4 feet 9 inches tall, you're more likely to need one either at home or when you travel. Sadly, buying a new booster seat is more tricky than it should be, so here are some helpful links and resources that I use to choose a car seat.

Three-across setup with all three kids in 5-point harness seats
Three-across setup with all three kids in 5-point harness seats

Does My Child Need a Booster Seat When We Travel?
The National Highway Traffic Safety Administration now recommends that all children who've outgrown their car seat continue to ride in a booster seat until they're at least 8 years old and 4 feet 9 inches tall. State laws may require booster seat use too, even if you are not required to use a booster at home. For example, since Jan 1, 2012 visitors to California (and residents) will be required to seat kids in a booster until they are 4'9" tall or 8 years old, even when they are riding in a Taxi or rental car.

If you plan to travel, here's a helpful list of car seat laws by US state and here's a list of car seat laws by Canadian province. Lists sometimes get out of date, so it's worthwhile to Google the specific state or province you are visiting. For example "Washington State Car Seat Law."

I don't use a booster at home, should I rent a car seat?
I don't recommend renting a booster seat for two reasons. The first is that they're often unsafe or dirty. The second is that they're expensive, rental car agencies charge as much as $15 per day and don't guarantee that the seat you need will be available when you pick up your car. Instead, I recommend either bringing the seat you use at home or investing in an inexpensive booster seat for travel. At $15 per day, the booster seat would pay for itself with only a few days of use.

If you do plan to rent a booster seat when you travel, here are some helpful safety tips for renting a car seat .

Should I buy a used booster seat?
Car seat experts recommend that you never buy a seat unless you know whether it has been in an accident. In addition, it is important to know that all car seats have an expiration date after which they are considered unsafe to use. In addition, many older booster seats did not position the child properly in the car and designs have changed in the past few years. I'm an advocate of buying used, or borrowing, many items for kids, but this is one place where it's worth investing in the latest and greatest.

Can I use my booster seat on a plane?
Booster seats are designed to properly position a shoulder belt. Since airplanes don't have shoulder belts, they serve no purpose in in airplane seat and cannot be used.

How do I tell if my Booster Seat is the Right Size for my Child and Car? Here's a link to some pictures that show exactly how a booster seat should position the car's safety harness: Booster Seat Fit Guide

It's a great idea to try before you buy - ask to try the floor model if you are buying from a retail store. If you are buying online, look for a retailer that offers free return shipping if the carseat does not work out.

Darya is big enough for a booster, but I prefer a 5-point harness
Darya is big enough for a booster, but I prefer a 5-point harness

What Features Should I Look For in a Booster Seat?
Part of the reason it's so difficult to choose the right seat is because there are so many kinds of seats, with different types offering different safety features and flexibility. When you are choosing a seat, here are some questions you should ask yourself:

  • Do I want impact protection? If your car has side airbags, you'll want to make sure that your child sits up straight in their seat and is not leaning against the door or the side of the car. The best way to do that is to purchase a seat with sides that they could lean against. Those sides are also comfortable if your child naps in the car on long rides.
  • Will it be used for carpools or permanently installed in my car? If you plan to use the seat for carpools, you might want a more compact model or a car seat that is very easy to install. If you plan to have the seat in your car permanently, you may want to choose one that attaches using the seatbelt or latch so that it doesn't become a projectile in a fast stop or crash.
  • Will it be used by more than one child?If you're choosing a seat with harnesses that will be used by more than one child, you may want to find a seat with external harness adjustment (meaning that you don't need to remove the carseat to adjust the harness size).
  • Would I prefer a 5 point harness? A five point harness is the safest harness, even for adults, but some kids feel like they've outgrown the harness, or you might prefer the simplicity of using the car seatbelt
  • Color and Design. That cute pink cover might seem like just the thing for your precious baby girl, but if you plan to have more kids, consider a neutral color.
  • What is the "track record" of the company that manufacturers the seat? Newer seats may have appealing features. On the other hand, an established company will have lots of data about how their seats perform in a crash.
  • Do you need 3 across? When you have your first child, it's hard to imagine ever needing to seat three kids in the back of your car, but the fact is that if you end up carpooling during the school-age years you may wish you'd bought an extra narrow seat
  • Do you ever need to seat a younger child in that seat? If you carpool, you may sometimes need to carry a not-booster-seat-aged child in your car, it's useful to have a carseat that would accommodate both your booster seat aged child and a younger child so that you don't need to swap out seats.
  • Does your car have a headrest at the appropriate height for your child?If not, you'll need a high-back booster seat.
  • Does it Fit?Check the seat's height and weight ratings to make sure you'll be able to use it until your child is 8 years old and 4'9" tall
  • Is it WashableA daily use booster seat should have a machine washable cover.
  • Do my Kids Need Cupholders If your car doesn't have cupholders that your kids can reach, you might consider a booster seat with a built in cupholder.

What Kinds of Booster Seats Can I Choose From?

  • Combination Car Seats with a 5-point Harness Some traditional carseats convert into a booster seat. If you decide to go this route, double check to make sure that your seat isn't expired by looking at the expiration or manufacture date on the base of the seat. Most seats are good for 6-8 years, but a few last as many as 10 years. You'll also want to double check the weight an height limits. Popular choices are the Britax Frontier 85 Combination Booster Car Seat and the Diono Radian RXT Convertible Car Seat, Shadow
  • High Backed Seatbelt Positioning Boosters This type of seat provides side impact protection while using the car's seatbelt. It's generally easy to install using the car's seatbelt, and a few seats install using latch (convenient since it keeps the seat from moving around when it's not in use). These seats can often be used as a backless booster. Popular choices include the The First Years Compass B540 Ultra Folding Adjustable Booster, Pink Butterfly , Diono Monterey Car Seat Booster, the Britax Parkway, and the Graco Highback Turbo Booster
  • Backless Booster This is the easiest type of carseat to keep in your trunk for carpool situations, and for some kids, it's the only seat that doesn't feel "babyish." It positions the car seatbelt at the correct height but does not provide impact protection for your child's head (some booster seats to have "arms" that provide impact protection for the child's hips). Consider a model that installs in your seat using LATCH so that it doesn't go flying when you make a fast stop with no kids in the car. Popular choices are the Graco Backless TurboBooster Car Seat, the Clek Olli, and the Diono SantaFe Car Seat Booster, Silver.
  • Other Alternatives If you're planning to use your booster seat for travel only, or infrequently, with the seat being stored in a parents trunk most of the time, here are some options that might work for you. The RideSafer Travel Vest works even for kids who aren't old enough for a booster and positions the car seat belt properly. It's lightweight, and easy to fit in a suitcase, daypack or carryon bag for travel. The BubbleBum Inflatable Booster Car Seat inflatable carseat compresses easily and can fit in a suitcase or daypack for travel.

How do I Choose A Safe, Well Made Booster Seat
Sadly, there's not one best seat for every family, nor is there one best source to get all the information you need in order to make a decision. Here are the resources I use when evaluating a carseat.

  • Check the Fit: The Insurance Institute for Highway Safety evaluates booster seats to make sure that they correctly position a child so that the seatbelt fits properly. Sadly, many do not, even though this is the basic function that a booster seat is designed to do. You can find a list of booster seats that work properly, and a list to avoid here. Even after consulting this list, you'll still want to evaluate the seat you buy with your child in your car.
  • Check For Recalls: Some companies have many safety related recalls for their carseats, while others have very few. While you never know which seats might be recalled in the future, past history is a good indicator of how seriously a company treats safety issues when they are designing and manufacturing their carseats. links to safety information and test results. Among the biggest manufactures, Safety 1st, Cosco, Dorel and Evenflo are brands that I often see recalling carseats. Here's the link to search for carseat recalls
  • Check Ease of Use: The NHTSA rates carseats for ease of use, which includes factors like how good the instructions are and how easy it is to buckle your child into the seat. You can read those ratings here
  • Check the Reviews: You'll also want to know how easy (or hard) installation is and how well the carseat wears over time, and sometimes independent reviews uncover problems with a seat before they reach the mass numbers required for a recall. Amazon is a good resource for real world reviews. The website is a great place to ask questions about the seat you are considering. If you have a subscription, Consumer Reports also publishes a thorough and independent review of carseats.

    Is there a "best time" to buy a booster seat
    If you have some flexibility in when you'll move your child into a booster seat, you might want to wait for a good deal. I asked Angie of the popular blog Baby Cheapskate for advice on finding a bargain. Here's what she said:

    There really isn't a right time to buy a car seat, per se. Different brands release their new models at various times throughout the year. I recommend using a site like to see what the price has done over time at Amazon (their prices often reflect prices elsewhere on the web) and choosing a price point that you're comfortable with, say, 30% off. Set up a price alert so you'll know when that happens. Then it's a matter of waiting until prices reach that point.

    In general, we see a lot of baby sales in January and in September.

    By the way, you might want to keep an eye on Baby Cheapskate, it's a great resource for finding deals on big purchases like carseats and strollers, as well as everyday needs like diapers and wipes.

    Where can I get my child's car seat or other restraint inspected to make sure it's being used properly?
    The best way to make sure that your booster seat is installed properly is to have a trained car-seat tech inspect it. Look for events in your area (local hospitals, fire stations and IKEA often run car seat checks) or search the National Highway Traffic Safety Administration Website for resources in your zipcode.

    Please note that I am not a certified car seat technician. These resources are the ones I use when making a purchase decision, and you should thoroughly research any carseat you purchase

    Readers: You can help too - if you have tips or favorite resources, please add them in comments.

    Related Links
    Travel Car Seat Recommendations
    Flying with Carseats

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    1. Esmi Johnson on November 7, 2015 at 1:25 a.m.

      That's really very helpful blog, here i came to know about so many features of booster seat and why they needed and as the concern is goes on to the safety of children then everybody should follow the rules. thanks for publishing so helpful post.