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Customer Reviews

Harmony Defender 360° Deluxe 3-in-1 Harnessed Booster Car Seat - Midnight

Ratings

4.4

Average rating based on 51 reviews

Rating Breakdown

34 reviewers rated this product 5 stars.

10 reviewers rated this product 4 stars.

2 reviewers rated this product 3 stars.

1 reviewers rated this product 2 stars.

4 reviewers rated this product 1 stars.

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Reviewer Recommendation

90%

Of the 30 reviewers who responded, 27 would recommend this product.

Key Considerations

Averages based on how reviewers feel this product performs.

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What customers are saying

The car seat offers a mix of positive and negative feedback. Customers praise its comfort, safety features, and ease of use, including the adjustable harness and slim design. However, some report issues with installation and quality, such as difficulties getting a secure fit and problems with defective units. Comfort is also a concern for some, who find the seat uncomfortable for their children. Overall, the seat's performance appears to vary, and customers should carefully consider the fit and installation before purchase.

This summary is generated by AI using customer reviews from multiple languages and translated into English.

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  • Customer rating: 2 out of 5 stars

    Good seat, bad anchor straps.

    Reviewed by Logan - April 17, 2019

    The seat is a good seat for the price. Bottom anchors are a hook type, more difficult than button-release. Upper anchor strap comes from two points but shortly goes to one strap. I was unable to use in my Jeep as the head rests are attached to the seat. The strap from the two points was too short to go over the seat. Using the single strap going over top of the headrest would have risked it sliding off to one side. Material was good. The instructions are in a compartment under the bottom of the seat, not intuitive to find. The instructions aren't easy to read, but are understandable if you have installed a car seat before .


  • Customer rating: 5 out of 5 stars

    Amazing car seat!

    Reviewed by Mommaof2 - September 20, 2019

    Love this car seat! Easy to put together and install. We now have 4 of them,2 for each car for our kids. I love that they turn into a backless booster later. They are also nice and narrow compared to a lot of other brands out there. The 2 main reasons we went with this seat instead of the diono was that this one had arm rests for the kids vs. diono doesn't,and the price. You can't beat it! It was delivered really quickly too and none of the boxes were damaged.


  • Customer rating: 5 out of 5 stars

    Great value for money

    Reviewed by Trish - May 3, 2019

    This forward facing car seat does everything I need it to do for my 3 year old. It’s half the price of most other car seats and it will last my son until he doesn’t need a booster anymore. Was relatively easy to put together out of the box and fits well in our van. I plan on buying another seat for our other car when it goes on sale again.


  • Customer rating: 5 out of 5 stars

    Couldn't ask for a better car seat!

    Reviewed by - July 18, 2018

    My husband and I bought this car seat for our son when he was transitioning to a forward-facing car seat. It was overwhelming doing the research to find the perfect seat but we are SO glad we made the right choice by purchasing the Harmony Defender 360. It's sturdy, durable, safe, made well and of course, comfortable for our tiny passenger. In such a competitive market for children's car seat products, we are so glad we bought Harmony. We loved this car seat so much that we bought a second one! You won't be disappointed with this product. It's a MUST buy! :)

    Review originally posted on harmonyjuvenile.com

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Exactly as described

    Reviewed by ST - November 17, 2019

    This is a great versatile carseat for a great price. I love that I will never have to buy another seat again.


  • Customer rating: 5 out of 5 stars

    Looks Good, Comfortable, Great Value

    Reviewed by MK - February 22, 2022

    + Comfortable cushioning +Higher than most other seats so +Has anchors for Isoflex +Easy to setup +Easy to adjust the back position +Best Price here -legendary customer service

    Yes, I would recommend this to a friend.
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  • Customer rating: 1 out of 5 stars

    Horrible quality, damaged and uncomfortable

    Reviewed by Joce - June 17, 2025

    I bought this car seat because of the sale, and regret my purchase. It arrived with a broken headrest strap. I didn't think it was a big issue until it kept flipping over into my child's face. It was difficult to put together and install. Next, the bottom strap between the legs pulls on the fabric, exposing the hard foam underneath. My daughter said it was extremely uncomfortable, it loked terrible, and the cup holder isn't strong enough to hold a water bottle without falling off. I've had this carseat 15 days and it's falling apart. Do not buy!

    No, I would not recommend this to a friend.
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  • Customer rating: 5 out of 5 stars

    Best car seat I’ve had

    Reviewed by - January 8, 2019

    I bought this car seat 2 years ago. I love it. I wish it was a available right now in Midnight, because I would buy 2 more. It doesn’t take up much room in my small Toyota Corolla. It’s not bulky or too wide. It doesn’t over lap seats so two people can safely sit in the back and have full usage of their seatbelts. I can safely fit 2 wider/bulky car seats next to it. It’s light weight. My son can easily climb in and out of it because the seat isn’t too high for him. I like that the cup holder can go on either side of the seat and that it doesn’t interfere with the arm rests. It’s really easy to loosen and tighten the straps, also changing the hieght of it is so easy. I wish it came in other colors, and that the Midnight was still in stock.

    Review originally posted on harmonyjuvenile.com

    Yes, I would recommend this to a friend.

  • Customer rating: 4 out of 5 stars

    Nice car seat

    Reviewed by Timmyp - June 22, 2019

    Easy assembly and fits well in my Rav. The hardest part of assembly was finding the manual under the seat.


  • Customer rating: 5 out of 5 stars

    Love the 3-in-1

    Reviewed by Papa T - March 29, 2019

    Great car seat, 3-in-1 is the way to go. Ensure your child is old enough to move from an infant car seat, but once they are, this is all you'll need until they can sit in the car unaided.