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3-in-1 harness booster helps protect your child, from toddler to youth
Grows with your child from forward-facing harness (26.5-65 lb) to highback booster (40-100 lb*) to backless booster (40-100 lb) *To continue to meet industry standards, we have increased the weight minimum from 30 to 40 lb
No-Rethread Simply Safe Adjust Harness System allows the headrest and harness to adjust together in one motion
Lightweight, portable seat is ideal for busy, active parents
One-hand, 9-position adjustable headrest grows with your child
2 easy-to-clean cup holders keep your child’s drinks and snacks close at hand
Open-loop belt guides help properly position your vehicle’s seat belt
Seat pad and harness covers are comfortable and machine washable
Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps to protect your little one in frontal, side, rear & rollover crashes
Side-impact tested according to FMVSS 213a with the built-in 5-point harness system
10 reviews for Graco® Tranzitions 3-in-1 Harness Booster Car Seat, Forward Facing Car Seat, Highback, to Backless Booster, Cinder
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$139.99

Frankie –
Daughter loves the car seat and color !
I can honestly say this is one of the best purchases I’ve made for my kid—hands down. The Graco Tranzitions 3-in-1 Harness Booster Car Seat has been exactly what I was looking for: safe, versatile, and incredibly practical for everyday life.First off, I love how it truly grows with your child. It transitions from a 5-point harness to a high-back booster and then a backless booster, so I know I’m set for years without needing to upgrade again. That alone makes it a huge value.What really stood out to me is how lightweight and easy it is to move. Whether I’m switching cars or traveling, it’s not a hassle at all—something I didn’t realize I needed until I had itInstallation was surprisingly simple, and once it’s in, it feels secure. The no-rethread harness and adjustable headrest make adjustments quick and stress-free, which is a big deal when you’re dealing with growing kidsMy child is genuinely comfortable in it—falls asleep on longer rides, no complaints—and I appreciate the little things like cup holders and easy-to-clean fabricBottom line: it’s affordable, practical, and built to last. If you want a reliable car seat that checks all the boxes without overcomplicating things, this is it.
Chase B –
Flawless from start to finish, and looks EXACTLY like the photo on the box it comes in 😉 lol
It’s a GREAT product and company. Very happy with the install and the overall look and fell. It has space for life, including cup holders and padding that seems sufficient. And I love how light it is.. it’s a good value for the money. No issues with the straps or anything to date, just a solid product that looks good! I am very happy with this product. Straps are TIGHT and this is easy to use. What more can you ask for out of a booster seat/car seat!? Happy all around. 10/10 I enjoy. 🙂
Angela B. –
Perfect Growing Booster Seat!
We love the Graco Tranzitions 3-in-1! It started as a secure forward-facing harness for our toddler (up to 65 lbs), then easily converts to highback and backless boosters as they grow, all in one seat. Super simple to install, lightweight for moving between cars, and the no-rethread harness/headrest adjustment is a lifesaver.Dual cup holders, machine-washable pad, slim design, and great comfort. It’s held up perfectly and gives us total peace of mind. Affordable and reliable, highly recommend!
DAMON –
Absolutely love it!!!!
FANTASTIC!!!! I originally ordered thr Chico car/booster seat. Then found this & returned the Chico immediately! This is a great product. Love Graco, the seat and back are very nicely padded for comfort, the head rest goes very high with a great amount of support! The straps are very easy to use, comes with adequate shoulder pads for comfort, the straps also have a very easy press release. The cup holders are reversed into the slot so you just have to remove them & turn them around. Kids love the comfort, it’s also light to carry & easy snaps together, I bought 2!
Gisselle –
Safe, Comfortable and Very Practical
Great car seat! Very sturdy, easy to install, and comfortable for my child. I love that it grows with them. Definitely a great investment!
T G –
Good lightweight harness booster
The seat itself seems well made and comfortable for our child. There are limited options when it comes to harness boosters and we were mainly looking for something lightweight for travel. While not as light as we would like, this was far lighter than similar seats in the price point. The biggest thing to note is that the cup holders are very difficult to pop up to rotate back and forth but work well once in place.
Jeana Whitlock –
Highly recommend
This car seat is wonderful! My nephew can get in and out of it by himself very easily. The harness locks are very easy to lock into place. The head rest slides up and down to adjust for size and that makes it so much easier than having to move the belts. It has thick sides on the head rest and sides for better protection. It is very durable and well made.
Maureen –
Great product!
Bought this so I had a car seat in my car for when my niece is with me. Great for the price and I know she is safe when I am driving. The cup holders for her are great for snacks or drinks. She says it is comfy. I love these adjustable height so she can keep growing into it and can eventually just use the booster.
Alberto Quintero –
Fácil de instalar y materiales de buena calidad.Es una buena compra sin dudarlo
Llego en tiempo adecuado para niños de más de 2 años. –
Llego en excelente condiciones. Util para no cambkar de sillas conforme crece tu pequeño o pequeña. Tomar en cuenta que tiene menos soporte lateral a nivel de los brazos y piernas, pero nada grave.