Car seats that transition to booster seats are one of my favorites. This is why I was excited when I was asked to test the Graco Tranzitions 3-in-1. 

Graco Tranzitions 3-in-1 Box
Getting ready to unbox!

When I removed this car seat from the box, I knew it would fit perfectly in my car. It’s a narrow car seat that allowed me to fit three across. Additionally, it was lightweight enough to move to different vehicles easily.

The LATCH system and open-loop belt guides made the installation very easy, but instead of using push button connectors, they’re push button and can be more frustrating. 

One of the unique features I found on this car seat was that the harness and headrest adjust together in eight positions and no re-threading is needed. There was no fussing around with stras and clips when it came time to adjust them. Additionally, the car seat has two cup holders attached to the base, not the armrests. 

One downfall I found was that the frame isn’t steel-reingorced and there’s no EPS energy-absorbing foam. This isn’t a huge concern since it passes all safety standards. 

With the price and all of the unique features, I can safely recommend this car seat. I enjoyed testing it and my child seemed to like it.

Graco Tranzitions 3 in 1 Harness Booster Seat, Proof
$119.99 $83.99
  • 3-in-1 harness booster helps protect your child, from toddler to youth
  • Grows with your child from forward-facing harness (22-65 pounds) to highback booster (40-100 pounds) to backless booster (40-100 pounds) to continue to meet industry standards, we have increased the weight minimum from 30 to 40 pounds
  • No-rethread simply safe adjust harness system allows the headrest and harness to adjust together in one motion.Do not use bleach
What We Liked:
  • Works with children from 22 to 100 pounds
  • Narrow design and light weight make it very portable
  • Headrest height is super easy to adjust with a single hand
  • Very sleek, comfortable fabric
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07/12/2024 01:47 pm GMT

Great Convertible Booster Seat

As a convertible seat, it transitions from a harness booster to a highback booster and finally to a backless booster. Thanks to the Simply Safe Adjust system, the headrest and harness can be repositioned together seamlessly.

This allows your seat to easily and comfortably accommodate your child as they grow. Other comfort features include dual armrests, two removable cup holders, a padded body insert, and harness covers.

Parents will enjoy how lightweight the seat is, making it effortless to change vehicles. The machine-washable inserts, seat pad, and covers are a breeze to clean. Though the graco tranzitions 3 in 1 is sleek and not heavy, it is still very safe. It has been rigorously crash tested and meets or exceeds all US safety standards.

Front of Graco Tranzitions Harness Booster
Notice the sheen of the material, removable cupholder areas (with cupholders removed), and armrests

Although, it does not have a steel-reinforced frame or energy-absorbing foam like some of its counterparts. It is simple to obtain a secure install thanks to the LATCH system and open-loop belt guides. The graco tranzitions 3 in 1 harness booster seat meets all safety standards but is missing a few safety upgrades that usually give parents peace of mind. 

Key Points to Remember

  • Converts from harness booster (22-65lbs), to highback booster (30-100lbs), to a backless booster (40-100lbs)
  • Has a five-point harness mode
  • Narrow profile and not bulky
  • Completely machine washable seat pad and covers
  • Includes dual armrests and dual cup holders
  • 5-point harness mode: must weigh 22-65lbs and measure 26.5-49” in height
  • Highback Booster: must weigh 30-100lbs and measure 38-57” in height
  • Backless Booster: must weigh 40-100lbs and measure 40-57” in height

Booster Safety Concern

The graco tranzitions 3 in 1 harness booster car seat has no age limit for available seat uses. However, the company does note that the American Academy of Pediatrics recommends that children use a built-in harness system until they reach the weight and/or height limit of their forward-facing seat.

Then, if they are under 4’9” they should use a belt-positioning booster. Typically, children transition to a belt-positioning booster when they are around eight years old. 

Furthermore, the American Academy of Pediatrics Association recommends that all infants and children should be rear-faced for as long as possible. In other words, until they meet or exceed the car seat’s weight and height limits. Even though the minimum weight limit for the harness booster is 22 pounds, it may not be the safest choice to put a 22-pound child in a booster seat. 

Unique Features

  • Harness and headrest adjust together to eight different positions
  • The crotch strap can be adjusted to two different positions
  • Seven-year expiration date
  • Three choices of color scheme
  • Dual cup holders attached to seat base and are separate from the dual armrests
  • Can convert to a backless booster


  • Seat weight: 12.5lbs
  • Seat height: 26.5” (headrest fully extended is 33”)
  • Seat depth: 13”
  • Listed seat width: 17” 


  • The narrow design and minimal weight make it easy to move from vehicle to vehicle
  • Accommodates children from toddler (22lbs) to young child (100lbs)
  • Sleek design, but still includes comfort features such as armrests and cup holders
  • Easy to install with either LATCH system or seat belt
  • No-rethread harness adjusts with the headrest


  • No storage for the harness system, it must be completely removed when using the seat as a belt-positioning booster
  • The LATCH system uses clip style anchor connectors instead of push-button 
  • No steel-reinforced frame or EPS energy-absorbing foam

Expiration Information

The Graco tranzitions car seat expires seven years after the date of manufacture. The specific date of manufacture can be located on your seat’s product label. 

Graco Tranzitions Manufacturer Label
Here’s the Graco manufacturer label so you can confidently know when it was made, and the 7 year expiration text on the plastic below

Cleaning and Care

The seat cover, cushion, and harness covers are machine washable. The harness straps should only be spot cleaned and should never be soaked or immersed. The buckle can be wiped down with a wet cloth. All other metal and plastic components can be cleaned with mild soap and lukewarm water. 

Warranty Information

Graco provides a limited warranty on its products, extending one year from the date of purchase. Some states prohibit limited warranties, so always check with the manufacturer.

If you find that your car seat isn’t functioning correctly or has damaged parts, Graco asks that you contact them. If you are within the warranty period, they will likely replace the parts or product at no cost. 

Customer Reviews

The majority of parents are pleased with their Tranzitions 3-in-1 booster seat. They find it lightweight and slim enough to fit various vehicle sizes. Additionally, its minimalistic design makes transferring from vehicle to vehicle effortless. 

A few customers have found the seat difficult to install. They have trouble getting a secure installation and abiding by the maximum inch of overhang limit. However, reviews on the ease of installation are mixed, with some customers having no issues. 

What We Like 

What We Dislike 

  • Difficult to install
  • Use of clip (or hook) anchor connectors instead of push-button

Graco Tranzitions 3-in-1 harness booster vs. Graco Nautilus 65

The Graco Nautilus 65 and the graco car seat tranzitions are both 3-in-1 harness boosters. They convert to the same three-seat types and follow the same weight limits. However, the Nautilus 65 is considered an upgraded version of the Tranzitions. 

The Nautilus 65 has a few features that the Tranzitions does not. These include a steel-reinforced frame, energy-absorbing foam, and the ability to recline to three different positions. However, these inclusions make the Nautilus 65 wider, heavier, and costlier.   


  • Both are a 3-in-1 convertible booster seats with identical weight ranges
  • Both can be installed using either the LATCH system or the vehicle’s seat belt
  • Both have a no-rethread harness connected to the headrest using the Simply Safe Adjust system


  • The Nautilus 65 has only one cup holder, while the Tranzitions has two
  • The Nautilus 65 is bulkier and heavier
  • Three recline positions are available with the Nautilus 65 compared to none with the Tranzitions
  • Two features that the Tranzitions doesn’t have while the Nautilus does are a steel-reinforced frame and energy-absorbing foam
  • The Nautilus 65 is more expensive

Graco Tranzitions 3-in-1 harness booster vs. Graco Wayz 

The Graco Tranzitions 3-in-1 harness booster is actually the same seat as the Wayz. The seats just go by two different names. Therefore, they share all of the same features. Even though the seats are identical, there are two differences. These are retailer and color choices.

The Graco Wayz is exclusively produced for and sold by Walmart. It remains the Tranzitions seat, just renamed for Wal-Mart and under different color choices.

If you’re interested in the Wayz, you can view it at Wal-Mart by clicking here.

Durable and Safe Convertible Seat

Overall, the Graco Tranzitions 3-in-1 doesn’t have a lot of bells and whistles, but it is an affordable and safe car seat perfect for active families. Though some parents have difficulty installing this seat, issues depend on vehicle type. 

If you are looking for a simple seat at a great price that can keep up with your busy lifestyle, then the Tranzitions is just the seat for you. 


Welcome to my car seat blog! As a mom of 3, I put together with other hard-working moms a highly informative one-stop car seat resource, full with many reviews and buyer guides. I hope you find it invaluable. Thank you for trusting me & my team! - Keren

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Keren Simanova

Welcome to my car seat blog! As a mom of 3, I put together with other hard-working moms a highly informative one-stop car seat resource, full with many reviews and buyer guides. I hope you find it invaluable. Thank you for trusting me & my team! - Keren