Poplar S Convertible Car Seat
$
399.99
color
Onyx
1
Currently out of stock - notify me when available
Overview
Highlights
- Fits child between 5-65 lbs
- Stages: Infant, Convertible
- Does not rotate
- Comes with two cup holders
Description
This convertible car seat accommodates up to 50 lbs when installed rear-facing and switches to a forward-facing car seat as they grow. The removable infant insert helps to properly position infants 22 lbs and under. Adjust the 14-position no-rethread harness and headrest to create the just-right fit.
ClickTight technology provides fully open seat belt paths that are clearly labeled and easy to access, and the automatic tensioner takes care of the tightening. Slim outside and spacious inside, this convertible car seat features 17” SpaceSaver technology designed to fit three across without compromising on safety and comfort.
For safety, it includes a patented SafeCell crumple zone and a V-shaped top tether to help manage crash energy. The ReboundReduce stability bar attaches to the car seat when installed rear-facing, helping to minimize movement in the event of a crash. Carbon steel frame and belt paths also provide strength and stability. The car seat cover fabrics are naturally flame-retardant with no added FR chemicals, and they’re safe to machine wash and dry.
What we about it
Designed for secure installation, rear and forward-facing, without the struggle.
Details
- Stages: Infant, Convertible
- Overall Dimensions: 23.5” (H) x 17” (W) x 20.5” (D)
- Product Weight: 28 lbs
- Rear Facing Capacity: 5-50 lbs, Max 49”
- Forward Facing Capacity: 22-65 lbs, Max 49”
- Number of Recline Positions: 6
- Number of Crotch Strap Positions: 3
- Car Seat Features:
- Level Indicators
- No-Rethread Harness
- FAA Approved
- Number of Cup Holders: 2
- Cleaning and Care: Machine Wash cold, delicate cycle, mild soap
- Certifications: FMVSS213/CMVSS213
- Manufacturer’s Warranty: 1 Year Limited
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Questions for Similar Products
Is this compatible with the mockingbird single-to-double stroller?
Natalie F
Will this car seat fit rear facing in a compact suv without resting on the front seat backs?
Alexis D
Customer reviews
96 Ratings
4.6out of 5
96 Ratings
Rated 5 stars by 71% of reviewers
Rated 4 stars by 21% of reviewers
Rated 3 stars by 6% of reviewers
Rated 2 stars by 2% of reviewers
Rated 1 star by 0% of reviewers
Customer Photos
1-10 of 96 Reviews
- Most Recent
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- Lowest Rated
Rated 5 out of 5
On of my favorite purchases so far!
This is my second Britax car seat. They provide the best quality and comfort with safety above most other car seats. It is easy to wash, has a very comfortable/soft material and cushion! I would recommend trying especially before spending more on a pricier car seat.
Michelle F
Mar 10, 2026
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Rated 4 out of 5
Great car seat!
This review was collected as part of a promotion
I loved this car seat for my daughter. I’ve never heard of this brand before but I was not disappointed! It adjusts so that as she grows the car seat will grow with her! And it met all my safety concerns so that’s a plus!
IvyH
Feb 17, 2026
Originally posted at Britax
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Rated 3 out of 5
Sand Onyx is not Tan!
Awesome product! This is our second purchase for second vehicle. Very easy to install and adjust. Game changer compared to other “top” brands.
I am disappointed because in the pictures this looks tan. It looks grey in real life.
I am disappointed because in the pictures this looks tan. It looks grey in real life.
Sand Onyx is not Tan
Jan 22, 2026
Originally posted at Britax
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Rated 5 out of 5
Great seat!
We absolutely love this seat. The install is a breeze, my kids prefer it comfort wise over our old gracos. The extended rear facing limits are fantastic, our 4.5 year old is still comfortably rear facing in hers. Easy to assemble and wash. Very slim side to side and incredibly compact front to back.
Momof3
Nov 1, 2025
Originally posted at Britax
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Rated 3 out of 5
Okish if you have a small clearance
While it’s narrow and fits my full sized Acura sedan, the way you have a very narrow clearance to put baby into the car seat because this sits very vertical. There’s no way to safely reposition the car seat so that it reclines a bit more and stay within the tilt guidelines on the car seat. Initially got it to save some back seat space but second guessing how we’re gonna get baby into the seat as he gets bigger. Not as easy to get into adjusting the seatbelt for the baby and moving the straps up…
Alicia L
Aug 16, 2025
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Rated 3 out of 5
Can we get a moms input in design PLEASE
Britax. Can I ask WHY the strap pads are connected to the car seat? Why would these not be removable to easy washing? Which leads me to my next point… why are there so many elastic loops in impossible to reach hooks that hold the cushions in place. Car seats have to be washed. Their ease in washing ability is what makes or breaks a car seat for me. I love this car seat but zero stars for its wash ability. Also, the anchors are not click connect, they are the incredibly frustrating squeeze latch…
Annoyed mom, we want easy
Aug 10, 2025
Originally posted at Britax
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Rated 5 out of 5
Nice
This review was collected as part of a promotion
Really good carseat, seems very safe, easy to install, nice color, durable, looks comfortable. No complaints, it’s adjustable, i recommend for others to try it out
stephanieof36e_9967
Aug 8, 2025
Originally posted at Britax
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Rated 2 out of 5
Not a fan of the straps on this model
We’ve used it for over a year when baby was 5 months to now 19 months and I’ve never been a fan of the straps. There is this hard rubber for no. Slip on the back of the pads that cause an indent on baby. The customer service was not very helpful. They said to just put the straps behind the seat cushion. I’ve done that for the past year and the straps seem to slide off the shoulders if you’re not careful, like they are made just a little too far apart. I don’t feel like my child is very safe in…
Cortruss
Jul 8, 2025
Originally posted at Britax
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Rated 5 out of 5
Love this car seat
This review was collected as part of a promotion
Absolutely love this car seat. Super comfortable my child fits in it I perfectly. Love the safeness of this car seat. Installing it was super single and not hard at all.
r00d_3534
Jun 27, 2025
Originally posted at Britax
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Rated 5 out of 5
Versatile and easy
This car seat is amazing. It’s beautiful, it’s strong, and easy. Installation was a breeze, and I thank britax for putting clear instructions on the seat insert stating under 22lb, you must use it rear facing. My 13 month old is 19lb and I definitely took the insert out before seeing the warning on it! The shoulder pads are amazing as they don’t fall down because they have grippies on them! My daughter was no longer liking the infant seat which is why I got this one and now, she loves sitting in her big girl car seat!
Rinaaaaa
May 5, 2025
Originally posted at Britax
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