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Britax Roundabout 55 Convertible Car Seat, Onyx (Prior Model)

3.9 3.9 out of 5 stars 262 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand BRITAX
Installation Type Latch
Material Alloy Steel
Color Onyx
Orientation Rear Facing

About this item

  • 100% Polyester
  • Made in the USA and Imported
  • Base with safecell technology designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat
  • Integrated steel bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash
  • Energy absorbing versa tether features a staged release tether webbing to slow the forward movement
  • Side impact protection comprised of deep side walls lined with energy absorbing EPP foam distributes crash forces, shields from vehicle intrusion, and contains the head, neck and body
  • Tangle free, five point harness distributes crash forces across the strongest parts of the body and provides a secure fit
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Product Description

Product Description

The Britax Roundabout 55 convertible car seat accommodates children rear facing from 5 to 40 pounds and forward facing from 20 to 55 pounds. The Roundabout 55 is purposefully designed and engineered to minimize the forward movement of your child's head during a frontal impact to reduce the risk of head injury with the following revolutionary Britax head safety technologies: base with safecell technology designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat. Integrated steel bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash. Energy absorbing versa-tether features a two-point attachment and staged-release tether webbing to slow the forward movement and reduce the crash forces reaching the child. The Roundabout 55 also incorporates Britax side impact protection to contain the head and body and protect from the most severe types of crashes. Additionally, the five-point harness is tangle-free and the multiple buckle and recline positions, comfort pads, and infant body pillow provide premium comfort and positioning.

Amazon.com

The BRITAX ROUNDABOUT 55 Convertible Car Seat is constructed to provide 360-degree protection by absorbing crash energy, minimizing forward movement, and shielding your child from harm during a collision. It also offers a comfortable seat and a secure, adjustable fit. The ROUNDABOUT 55 serves as a rear-facing seat for children from 5 to 40 pounds and a forward-facing harnessed seat for children weighing 20 to 55 pounds.

ROUNDABOUT 55
Convertible Car Seat
(Onyx)
At a Glance:
  • Side Impact Protection system with energy-absorbing foam diverts crash forces
  • Base with SafeCell Technology compresses to counteract forward momentum
  • Energy-Absorbing Versa-Tether anchors seat and slows forward movement
  • Integrated steel bars reinforce seat stability
  • Tangle-free, five-point harness provides a secure fit
Age/Weight Requirements:

5 to 40 pounds rear facing; 20 to 55 pounds forward facing

Warranty:

Limited one-year warranty

With the Side Impact Protection system, energy-absorbing foam helps divert crash forces. View larger.

SafeCell Technology helps to minimize the risk of head injury during a collision. View larger.

The tangle-free, five-point harness provides a secure fit as your child grows. View larger.

Side Impact Protection System Diverts Crash Forces

The BRITAX Side Impact Protection system includes a rigid shell with deep sidewalls lined with energy-absorbing EPP foam to contain your child's head and body and divert crash force energy while creating a barrier against possible intruding objects. This system also protects your child's head and chest.

SafeCell Technology for Advanced Protection

The base of the ROUNDABOUT 55 includes SafeCell Technology comprised of SafeCells, an engineered material designed to compress in a crash. This compression lowers the center of gravity to counteract forward rotation of the seat, helping to minimize the risk of head injury during a collision.

Located in the sides of the seat shell, integrated steel bars strengthen the connection to the vehicle and prevent forward flexing of the seat during a crash to reduce the risk of head injury.

In the event of a sudden stop, the Energy-Absorbing Versa-Tether strap restricts forward movement and reduces crash forces with patented staged-release webbing and a 2-point attachment. This webbing securely anchors the top of your child seat to your vehicle in either rear- or forward-facing positions.

Tangle-Free Harness and Other Comfort Features

The tangle-free, five-point harness allows for multiple height positions and two buckle positions for a snug, comfortable fit as your child grows. High-density comfort foam provides premium comfort, while rear- and forward-facing recline options help your child relax on the journey. You can also use an infant positioning insert (sold separately) to optimize fit for small infants.

User-Friendly Features and Airplane-Approved Design

The ROUNDABOUT 55 takes the guesswork out of installation thanks to a range of convenience features. An anti-slip, contoured base grips and protects the vehicle seat, while harness holders prevent straps from getting in the way when you're putting your child in the seat. Premium lower LATCH connectors install quickly and release with a push of a button. For peace of mind, built-in lock-offs provide a secure installation when using the vehicle lap and shoulder belt.

The ROUNDABOUT 55 has a durable cover that can be removed for easy cleaning. It's also approved for airplane travel.


Product and Warranty Information

The BRITAX ROUNDABOUT 55 is made in the USA, has a seven-year life, and is backed by a manufacturer's limited one-year warranty.

What's in the Box

BRITAX ROUNDABOUT 55 Convertible Car Seat, removable cover with comfort pads, infant body pillow, and user guide.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Britax Roundabout 55 Convertible Car Seat, Onyx (Prior Model)

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Customer reviews

3.9 out of 5 stars
3.9 out of 5
262 global ratings

Customers say

Customers like the quality, ease of installation, comfort, fit and value of the infant toddler car seat. They mention that it's well-made, sturdy and holds up well in extreme weather. They appreciate the recliner and that it can be converted from rear to front facing. Customers also like the safety, and security. However, some customers dislike the straps.

AI-generated from the text of customer reviews

107 customers mention107 positive0 negative

Customers are satisfied with the quality of the infant toddler car seat. They mention it's well-made, sturdy, and holds up well in extreme weather. Some say it'll be easy to install and is a great product.

"...It is just as sturdily built as the Marathon, but doesn't have all the creature comforts...." Read more

"...It got here in less than 5 days. Box looked untouched, not damaged at all...." Read more

"...This carseat has held up well in extreme weather (we park our car outside, in 90-100 degree weather and sub-zero temps)...." Read more

"This seat is quality made and I love the price. We got it for around $145 and it sells for over $200 at Buy Buy Baby...." Read more

99 customers mention80 positive19 negative

Customers find the installation of the infant toddler car seat easy. They mention that it reclines easily, and is easy to transport. They also say that the recliner makes it easy to convert from rear to front facing.

"...path, and these blue clips pinch them to lock the belt in place - very easy and no worry of forgetting or losing an external clip...." Read more

"...connectors, but it just seemed like the premium ones were better, easier to use." Read more

"...Compared to the ease of the KeyFit, this seat is a pain. Installation isn't terrible, but the rear tether and lack of incline does not make for a..." Read more

"Very easy to install. I installed it facing forward for my 2 year old with no issues...." Read more

80 customers mention75 positive5 negative

Customers like the comfort of the infant toddler car seat. They mention that it's constructed well, and their son sits in it comfortably. The padding seems comfortable, and the seat fits well. They also say that it seems like an easier car seat all around, and that the locking clips make it easy to get the seat very tight and secure.

"...Unlike the Evenflo, in this Britax our child seems comfortable (always seemed scrunched in the Evenflo for some reason)...." Read more

"...is easier to adjust belt positioning, and just seams like an easier car seat all around...." Read more

"...I really like it, she seems comfy in it...." Read more

"...It fits our daughter snugly and safely but without being too tight, and the straps never ever get tangled...." Read more

78 customers mention65 positive13 negative

Customers like the fit of the infant toddler car seat. They mention that it fits like a charm, adjusts easily, and installs somewhat easily. They appreciate the adjustable crotch strap, and say that it provides ample space and support for their active 2 year old. They also mention that the seat is more compact than their friends Britax car seats and that it's easier to adjust the belt positioning.

"...We like to use the seat rear facing in the middle, and it fits well...." Read more

"...The Marathon is easier to adjust belt positioning, and just seams like an easier car seat all around...." Read more

"...The straps are also very easy to adjust which is a plus. I am pregnant with our third child and we'll be using this carseat again for sure!..." Read more

"...The straps adjust pretty easily even though you have to pull them out to adjust...." Read more

56 customers mention53 positive3 negative

Customers find the infant toddler car seat to be a great value. They say it works well for their 7 month old daughter and is well worth the price.

"...All in all, a great seat at a very reasonable price...." Read more

"...Well worth the price." Read more

"...Definitely worth the money!!! I absolutely love it." Read more

"This seat is quality made and I love the price. We got it for around $145 and it sells for over $200 at Buy Buy Baby...." Read more

39 customers mention39 positive0 negative

Customers are satisfied with the safety of the infant toddler car seat. They mention that it has a high rating for safety and comfort.

"...It fits our daughter snugly and safely but without being too tight, and the straps never ever get tangled...." Read more

"...Overall, this is a very safe, easy to use convertible carseat...." Read more

"...They appear to fit snuggly but not uncomfortably. Seems right for safety...." Read more

"...I love it for the safety quality and love how the straps can be pulled forward to get him out...." Read more

22 customers mention22 positive0 negative

Customers find the infant car seat very easy to secure in rear and forward facing positions. They say the seat belt attachment is very secure, and the clamp system inside provides a much more secure installation when using the lap belt. Customers also say the straps are easy to loosen or tighten, and it hooks on well.

"...allowed me to tether to the base of the front seat providing a super secure mounting...." Read more

"...The restraint system is very easy to maneuver and I love the velcro on the sides to keep the straps out of the way when putting the baby in the seat...." Read more

"...It's easy to tighten and loosen but the loosen mechanism is hidden and would be difficult if not impossible for the child to get to...." Read more

"...out on each side of the head, which made it really comfortable and secure...." Read more

23 customers mention4 positive19 negative

Customers find the straps in the infant toddler car seat difficult to tighten, adjust, and reposition. They also say the mechanism for adjusting the strap is awful and sticky. The straps don't slide as easily and have to be manually moved from slot to slot. Customers also say that the shoulder straps get stuck and tangled beneath their child. They mention that the strap doesn't lay as nicely and that it's a pain to loosen the shoulder harness.

"...The other downside was the seatbelts/straps don't auto adjust so you have to do it yourself, which is not a dealbreaker for me so was cool with that..." Read more

"...The two side buckles are particularly difficult...." Read more

"...Also, the straps don't lay as nicely in this one they can twist and turn so you have to fiddle with them to get them lined up correctly on your..." Read more

"...The strap adjusting button is awkward to reach when it is rear facing, and we don't have a floor clip so the seat belt straps wrap around the sides..." Read more

Top reviews from the United States

Chris C.
5.0 out of 5 stars Great car seat, with some unexpected features
Reviewed in the United States on November 3, 2012
Verified Purchase
We purchased this car seat after trying an Evenflo Symphony, which just didn't fit well in our car, our child just could not sleep in and didn't seem comfortable.

This Britax is great. We like to use the seat rear facing in the middle, and it fits well. The shape of the back of the seat allows it to nestle in between the front seats, and allows a comfortable amount of recline. Unlike the Evenflo, in this Britax our child seems comfortable (always seemed scrunched in the Evenflo for some reason). The Britax seems to have a nice amount of lumbar support for the child, making seating comfortable.

We still needed to prop the base to be level, as car seats are not level, which allowed a nice reclined position. The fact these seats are designed to recline when the base is on a flat surface is still a gripe of mine, as vehicle manufactures do not make seats level.

The "Versa Tether" feature was quite unexpected, and allowed me to tether to the base of the front seat providing a super secure mounting. This tether extends from the top of the back of the seat and includes a webbing loop to secure to solid points in the vehicle that do not have any way to clip to otherwise.

I also didn't expect and really liked the locking clips under the padding for use when securing with seat belt instead of the LATCH system. These seemingly eliminate the need for the metal locking clip that other car seats we have used required. The belts are run along a specific path, and these blue clips pinch them to lock the belt in place - very easy and no worry of forgetting or losing an external clip.

All in all, a great seat at a very reasonable price. I will update if anything happens or changes our minds, but at this point we expect to get many many miles of usage from this seat.
29 people found this helpful
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Jack M. Reilly
4.0 out of 5 stars Good carseat
Reviewed in the United States on June 6, 2013
Verified Purchase
I bought this car seat for our second vehicle, and has not disappointed. When we were looking for a second car seat we decided that we did not want to spend another 200 a some odd dollars for another Britax Marathon . At first we looked at Graco My Ride 65 and we liked it, but then we found the Roundabout for just a little bit more. We loved the Britax so much that we decided to buy it. It is just as sturdily built as the Marathon, but doesn't have all the creature comforts. The Marathon is easier to adjust belt positioning, and just seams like an easier car seat all around. The one thing that sold me on the Roundabout was the Premium LATCH connectors, which are the same on the Marathon. I have never used the ordinary LATCH connectors, but it just seemed like the premium ones were better, easier to use.
2 people found this helpful
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Emac
5.0 out of 5 stars Just as good as the other more expensive Britax
Reviewed in the United States on October 23, 2013
Verified Purchase
I have a Britax Boulevard 70 for my 2 year old and paid about $240 for it on sale at Babies R Us. I really like it, she seems comfy in it.

So, when it came time for my 1 year old to get a new carseat, i was not too keen on spending another grip of money on it.

It was great to see reviews on Amazon about the similarities between the Boulevard and Marathon in comparison to the Roundabout. I wish i had done this research before purchasing the expensive Boulevard! I just thought that the more expensive the carseat, the better it must be. Ofcourse i heard that Britax was the best for carseats so thats what i wanted. Other reviews on Amazon that sold me said that it was essentially the same size, similar features. Only set backs are it doesn't carry the same weight but what helped me on that was: By the time your child reaches that weight, they may be in a booster seat anyways. The other downside was the seatbelts/straps don't auto adjust so you have to do it yourself, which is not a dealbreaker for me so was cool with that. I think that the more expensive ones do have a couple of increased safety features, so if you're paranoid about car accidents then maybe you should consider that too.

I bought the Roundabout on Amazon with Free super saver shipping. It got here in less than 5 days. Box looked untouched, not damaged at all. I opened it up, adjusted the straps and buckled it into my Honda Pilot and i was good to go. I checked it out for a minute to see the differences between the Roundabout and the Boulevard that i have. I really couldn't tell anything of importance. I'm happy about that. I'm very happy with my purchase and i would recommend this Roundabout carseat to anyone who wants a Britax without breaking the bank.
5 people found this helpful
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KLTmom
5.0 out of 5 stars Great car seat! Our third Britax; very satisfied repeat customer
Reviewed in the United States on January 18, 2015
Verified Purchase
We've been using this carseat for over a year now and it's been great. It's the third Britax carseat we've purchased (the first two were a carseat and a high backed booster we had for our older child--the carseat was several years old otherwise we would've kept it for our younger-by-9-years second child; the high backed booster is still as good as new and we'll be using it soon for our second child when she grows out of this one that I'm reviewing). This carseat has held up well in extreme weather (we park our car outside, in 90-100 degree weather and sub-zero temps). It fits our daughter snugly and safely but without being too tight, and the straps never ever get tangled. The straps are also very easy to adjust which is a plus. I am pregnant with our third child and we'll be using this carseat again for sure! Well worth the price.
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