Product Dimensions | 20.5 x 17 x 23.5 inches |
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Item model number | E1C933R |
Minimum weight recommendation | 5 Pounds |
Maximum weight recommendation | 65 Pounds |
Maximum height recommendation | 49 Inches |
Material Composition | plastic, steel, polyester |
Care instructions | machine wash cold, delicate cycle, mild soap |
Style | Poplar |
Number of reclining positions | 14 |
Batteries required | No |
Orientation | Rear and Forward Facing |
Rear-facing minimum child weight | 5 Pounds |
Rear-facing maximum child weight | 50 Pounds |
Forward-facing minimum child weight | 22 Pounds |
Forward-facing maximum child weight | 65 Pounds |
Harness type | 5-Point |
Item Weight | 27.2 pounds |
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- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- Buy a lot of stuff on Amazon? Tons of items eligible for coverage, from the latest tech like Laptops, Game Consoles, TVs, Phones, and Cameras to major appliances, sporting goods, tools, toys, personal care, furniture, and more (not eligible for commercial or business use items).
- Accidents Happen. That’s why for your portable products we cover accidental damage from handling such as drops, spills and cracked screens. We also cover electrical and mechanical malfunctions, power surges, and wear and tear.
- Today's and Future Purchases covered. 30 days after you are enrolled, all eligible purchases today and eligible future purchases made on Amazon will be covered by your plan as long as you are enrolled.
- Fast, easy claims. Frustration-Free claims, with most filed in minutes. We will fix it, replace it, or reimburse you with an Amazon e-gift card for the purchase price of your product (excluding tax). File at Asurion.com/amazon.
- No Hidden Fees. For just $16.99 a month + tax you’re covered for up to 5,000 in claims per 12-month period. *THIS PROGRAM IS MONTH-TO-MONTH AND WILL CONTINUE UNTIL CANCELED* Coverage for all products ends 30 days after the plan is canceled. Cancel any time.
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
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Britax Poplar Convertible Car Seat, 2-in-1 Car Seat with Slim 17-Inch Design, ClickTight Technology, Cobalt Onyx
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Bundles with this item
Purchase options and add-ons
Brand | BRITAX |
Installation Type | Seat Belt |
Color | Cobalt Onyx |
Orientation | Rear and Forward Facing |
Product Dimensions | 20.5"D x 17"W x 23.5"H |
About this item
- 2-in-1 Convertible Car Seat: Fits rear-facing up to 50-lbs to help keep your child riding safely even longer; Easily switches to forward-facing
- Install with Confidence, Every Time: With ClickTight there’s no guessing or stressing! Fully open seat belt paths are clearly labeled and easy to access; Automatic tensioner takes care of the tightening
- SpaceSaver Design: Slim outside, spacious inside! 17” seat is designed to fit 3-across* without compromising on trusted Britax safety & premium comfort *Britax cannot guarantee 3-across installation fitment in all vehicles.
- Room to Grow: 14-position quick-adjust headrest and harness create the perfect fit
- Trusted Britax Safety: Carbon steel frame & belt paths, patented V-shaped tether, patented SafeCell crumple zone
- Naturally Flame-Retardant Fabrics with no added FR chemicals
- Quick, Easy Cleanup: Washer & dryer friendly cover and dishwasher-safe cup holders
Frequently bought together

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From the brand

Protecting What Matters Most
As a leader in child safety technology, we’re here to give you confidence for the road ahead.
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Our mission is to help protect what matters most by providing safe, comfortable, & easy-to-use child travel solutions. Our car seats, strollers, & accessories are designed to give you confidence for every journey.
We’ve been leading the way in child safety for over 55 years. Drawing on decades of experience, we strive to help make family travel safer & more convenient with parent-inspired features & products that prioritize child comfort.
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Just Getting Started
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Poplar S Convertible Car Seat
2-in-1 seat with a slim 17” design, an extended rear-facing capacity of 50 lbs, and ClickTight technology
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Toddler Transitions
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One4Life All-in-One Car Seat
Designed for up to 10 years of use! Features ClickTight technology, Britax safety, and premium comfort
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Big Kid Safety
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What’s our “why”?
Our passion for child safety drives everything we do. It’s what brings us together as a team every day.
What makes our products unique?
Britax products are set apart by rigorous testing, industry-leading innovations like ClickTight installation, and convenient features that are designed to help solve everyday parenting challenges, like SafeWash fabrics.
What is ClickTight?
ClickTight is our exclusive seat belt tensioner and lockoff system. It’s designed to help take the guesswork out of car seat installation – because something so important shouldn’t be difficult.
From the manufacturer





Safety Information
Product Description
Ready to go with room to grow! Poplar takes the stress out of moving to the next car seat stage with trusted Britax safety, patented ClickTight® Installation, and a slim SpaceSaver™ design. Fits rear-facing up to 50-lbs to help keep your child riding safely even longer. Easily switches to forward-facing. Install with confidence every time thanks to Britax-exclusive ClickTight. Fully open seat belt paths are clearly labeled & easy to access, and the automatic tensioner takes care of the tightening. Easily adjust the 14-position harness & headrest with one hand to create your child’s perfect fit. Slim outside, spacious inside! 17” seat design fits 3-across* without compromising on trusted Britax safety & premium comfort. Our patented SafeCell crumple zone & V-shaped top tether help manage crash energy. Carbon steel reinforced frame & belt paths provide strength and stability. Fabrics are naturally-flame retardant with no added FR chemicals, and safe to machine wash and dry. *Britax cannot guarantee 3-across installation fitment in all vehicles.
Product information
Technical Details
Additional Information
ASIN | B0BWGZ3BVL |
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Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #3,317 in Baby (See Top 100 in Baby) #19 in Convertible Child Safety Car Seats |
Warranty & Support
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Britax Poplar Convertible Car Seat, 2-in-1 Car Seat with Slim 17-Inch Design, ClickTight Technology, Cobalt Onyx
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This Item ![]() Britax Poplar Convertible Car Seat, 2-in-1 Car Seat with Slim 17-Inch Design, ClickTight Technology, Cobalt Onyx | Recommendations | |||||
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Price | $329.99$329.99 | $429.99$429.99 | -9% $209.99$209.99 List: $229.99 | $319.99$319.99 | -8% $349.99$349.99 List: $379.99 | $299.99$299.99 |
Delivery | Get it as soon as Wednesday, May 7 | Get it as soon as Wednesday, May 7 | Get it as soon as Thursday, May 8 | Get it as soon as Wednesday, May 7 | Get it as soon as Thursday, May 8 | Get it as soon as Thursday, May 8 |
Customer Ratings | ||||||
Sold By | CapitalKidz | CapitalKidz | Amazon.com | CapitalKidz | Amazon.com | Amazon.com |
material | — | Plastic, Alloy Steel, Polyester | Plastic, Metal, Polyester | Alloy Steel, Foam | Polypropylene | Fabric Alloy Steel Foam |
min recommended weight | 5 pounds | 4 pounds | 25 pounds | 5 pounds | 5 pounds | — |
max. recommended weight | 65 pounds | 65 pounds | 100 pounds | 100 pounds | 120 pounds | 65 pounds |
maximum height | 49 inches | 49 inches | 57 inches | 57 inches | 63 inches | 49 inches |
minimum height | — | 0 inches | 38 inches | 0 inches | — | — |
rear-facing min. weight | 5 pounds | 4 pounds | — | 5 pounds | 5 pounds | 4 pounds |
max rear facing weight | 50 pounds | 40 pounds | — | 40 pounds | 50 pounds | — |
max forward facing weight | 65 pounds | 65 pounds | 65 pounds | 65 pounds | 120 pounds | 65 pounds |
min forward facing weight | 22 pounds | 26.5 pounds | 25 pounds | 25 pounds | 22 pounds | 22 pounds |
harness type | 5-Point | 5-Point | 5-Point | 5-Point | 5-Point | 5-Point |
number of height positions | 14 | 15 | 9 | 10 | 15 | 9 |
Videos
Videos for this product
0:54
Click to play video
Britax Poplar S Video featuring 3 across seatingBritax Child Safety
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the car seat easy to install with its click-tight technology, and appreciate its comfort with plush cushions and soft material. The seat fits well in compact sedans and features a steel-reinforced frame for added security. They like its safety features, with one customer noting the steel base for protection, and appreciate its bright pink color options. While the car seat receives positive feedback for its build quality, customers find it super heavy.
AI-generated from the text of customer reviews
Customers find the car seat easy to install, praising its click-tight technology, with one customer noting it takes just 3 minutes to set up.
"...I just love the quality of this brand. It’s very sturdy, easy to install, Clean and most importantly extremely comfortable for my babies...." Read more
"...It is super easy to install and adjust. The safety is the best when it comes to britax. Functionality is great. It looks and feels nice...." Read more
"...Now that I’ve uninstalled and reinstalled it a few times, I find it very easy. I love the click tight under the seat, it works great...." Read more
"...Baby fits in it perfectly. The install is SUPERIOR to any other car seat...." Read more
Customers find the car seat comfortable, noting its plush design and soft material, with one customer mentioning it includes extra cushioning for infants.
"...sturdy, easy to install, Clean and most importantly extremely comfortable for my babies...." Read more
"...Functionality is great. It looks and feels nice. My baby is a sweater and there are no stains we've had this for 5 months...." Read more
"...It seems pretty comfy too...." Read more
"...Otherwise, the seat is comfortable, easy to install, and a great space-saving option for smaller vehicles. Definitely recommend!" Read more
Customers like how the car seat fits, particularly in compact sedans and behind the driver's seat, with one customer noting it accommodates three children rear-facing.
"...This is my second purchase of the poplar and I love the slim profile makes fitting two in the back of my Honda ridgeline a breeze with room for..." Read more
"...It is very cute, and fits decently in my compact sedan (Chevy Cruze). It seems pretty comfy too...." Read more
"...It is very easy to tighten and loosen. Baby fits in it perfectly. The install is SUPERIOR to any other car seat...." Read more
"The best slim fit car seat there is. Easy install with multiple recline levels. The seat itself is fairly light in comparison to others we have used...." Read more
Customers find this car seat to be of excellent quality, particularly noting its suitability for Jeep Wrangler vehicles.
"...I just love the quality of this brand. It’s very sturdy, easy to install, Clean and most importantly extremely comfortable for my babies...." Read more
"...the Britax Poplar S for a little while now, and overall, it’s a fantastic car seat!..." Read more
"We have 2 of these, these are the BEST car seats ever. They do not move at all. I love mine and never will move out of this brand!" Read more
"...I had almost cut them out. I was so frustrated. The seat is still a great seat but I am not pleased with the way the shoulder pads were installed...." Read more
Customers praise the car seat's construction, noting its steel-reinforced frame and secure design.
"...I just love the quality of this brand. It’s very sturdy, easy to install, Clean and most importantly extremely comfortable for my babies...." Read more
"...And we travel 12+ hrs to a destination. Its built with all steel framing that is what we were looking for and this is what we got...." Read more
"I am impressed at the quality of the car seat...." Read more
"...Material is nice and easy to clean if needed. Manual is easy to read and helpful with install instructions" Read more
Customers find the car seat safe and secure, with one customer noting it's easy to use and another mentioning there's no struggle with the vehicle's seat belt.
"...It is super easy to install and adjust. The safety is the best when it comes to britax. Functionality is great. It looks and feels nice...." Read more
"...the weight, but honestly, that’s to be expected—it has a steel base for added protection!..." Read more
"...It feels like a very safe car seat. We bought two. I tell everyone they could buy it!" Read more
"...When installed correctly, it’s definitely the safest place in the car. Buy the car seat." Read more
Customers like the car seat's color options, describing them as pretty and bright pink.
"...Functionality is great. It looks and feels nice. My baby is a sweater and there are no stains we've had this for 5 months...." Read more
"...I find the adjustments very easy to use as well. It is very cute, and fits decently in my compact sedan (Chevy Cruze)...." Read more
"Love this car seat! The color is beautiful and the install was the easiest I’ve ever done! The click tight is where it’s at!..." Read more
"WOW! Stunning and high quality. Narrow design but looks so comfy for my baby!..." Read more
Customers find the car seat heavy and bulky.
"I am impressed at the quality of the car seat. It is definitely heavier (sturdier) so you won’t be lugging it around but it is by far the best car..." Read more
"...The biggest two cons are that the car seat is very very heavy and the fabric part is difficult to get on and off. 1...." Read more
"...It is heavy and easy to install in the car, the cushions are enough, which can be removed as he grows. My son really liked the new seat...." Read more
"...car seats (I have two other Britax for my older kids): they're super heavy and the harness straps release button is hard to locate and activate...." Read more
Reviews with images

Happy Toddler, happy siblings and great road trip+
Top reviews from the United States
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- Reviewed in the United States on March 23, 2025Color: Stone OnyxStyle: PoplarVerified PurchaseBought this for my 2 year old that was regularly complaining of back pain in her old Graco seat. This is super nice material, thick padding, and so easy to loosen and tighten the straps. The release button for the harness is kind of in a weird spot, but causes no issues once you get used to it. We’ve had the seat for about 8 months now, done several road trips, and she has never complained.
- Reviewed in the United States on March 23, 2025Color: CowmooflageStyle: Poplar SVerified PurchaseWOW!
Stunning and high quality. Narrow design but looks so comfy for my baby!
I have been using these car seats since our first little one was 1 year old and now she’s 7. Ordered again that our newest baby turned 1. I couldn’t recommend Britax enough!
The Poplar S with the cow print is just 😍
- Reviewed in the United States on April 23, 2025Color: Sand OnyxStyle: Poplar SVerified PurchaseThe media could not be loaded.
5.0 out of 5 starsWe love britax! This was the best choice for our toddler. We are a sports family who is always on the road. And we travel 12+ hrs to a destination. Its built with all steel framing that is what we were looking for and this is what we got. It is super easy to install and adjust. The safety is the best when it comes to britax. Functionality is great. It looks and feels nice. My baby is a sweater and there are no stains we've had this for 5 months. Cleaning is simple or a simple youtube short. Best bang for your buck. The best!Happy Toddler, happy siblings and great road trip+
Reviewed in the United States on April 23, 2025
Images in this review
- Reviewed in the United States on April 25, 2025Color: Stone OnyxStyle: Poplar SVerified PurchaseReally nice
- Reviewed in the United States on January 19, 2025Color: Stone OnyxStyle: PoplarVerified PurchaseI am impressed at the quality of the car seat. It is definitely heavier (sturdier) so you won’t be lugging it around but it is by far the best car seat around. The shoulder pads and the buckle pad are thick. It is very easy to tighten and loosen. Baby fits in it perfectly. The install is SUPERIOR to any other car seat. I feel confident knowing that the car seat will protect baby in case anything happens. I will never buy a different brand of car seat again. I know there are a few that convert into booster seats but I don’t think it is worth sacrificing the safety that is needed when they’re younger. Booster seats are inexpensive. I’d rather purchase this one that fits and protects nicely in the first few years of life, and then later on purchase a booster. I love that baby is able to rear face longer as well. There is a level on it too so you know when you have the car seat reclined just right.
- Reviewed in the United States on March 14, 2025Color: Arctic OnyxStyle: Poplar SVerified PurchaseWe’ve been using the Britax Poplar S for a little while now, and overall, it’s a fantastic car seat! The materials feel high-quality, and the steel-reinforced frame gives me confidence in its safety. I’ve seen a lot of reviews complaining about the weight, but honestly, that’s to be expected—it has a steel base for added protection! If you want a lightweight car seat, you’ll likely be sacrificing durability and safety.
The only reason I’m giving it 4 stars instead of 5 is that the harness straps can be a bit difficult to tighten. It takes a little extra effort to get them snug, which can be frustrating at times. Otherwise, the seat is comfortable, easy to install, and a great space-saving option for smaller vehicles. Definitely recommend!
- Reviewed in the United States on February 26, 2025Color: Arctic OnyxStyle: Poplar SVerified PurchaseGreat option for our son who was showing signs of being increasingly uncomfortable in his infant car seat as he grew. Now, our son kicks his little feet all the way—no more crying during car rides! Most importantly, it’s sturdy! My husband and I tried to wiggle it at it’s base after tightening and couldn’t. When installed correctly, it’s definitely the safest place in the car.
Buy the car seat.
- Reviewed in the United States on January 15, 2025Color: Arctic OnyxStyle: Poplar SVerified PurchaseI will say that installing this car seat at first was a bit difficult and confusing for me, but I watch Britax’s video tutorials on youtube which helped. Now that I’ve uninstalled and reinstalled it a few times, I find it very easy. I love the click tight under the seat, it works great. The car seat is so secure and doesn’t move an inch. I find the adjustments very easy to use as well. It is very cute, and fits decently in my compact sedan (Chevy Cruze). It seems pretty comfy too.
I, thankfully, can’t actually attest to the safety of this car seat, but Britax is highly rated in that department from what I’ve read. And I did a lot of reading before making my purchase.
Overall, I really do like this car seat and recommend it. First time installation was difficult, but once you figure it out it is much easier. 👍🏻
Top reviews from other countries
- Cristian J.Reviewed in Mexico on July 9, 2024
5.0 out of 5 stars Muy buen artículo
Color: Stone OnyxStyle: Poplar SVerified PurchaseExcelente
- arf arfReviewed in Singapore on November 10, 2024
5.0 out of 5 stars PERFECT
Color: Stone OnyxStyle: Poplar SVerified PurchasePERFECT CAR SEAT