Britax OPEN BOX Poplar S ClickTight Convertible Car Seat, Slim 17-Inch Design - Arctic Onyx | live price, prepared checkout

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Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 76 checked facts, checked 2026-10-09T00:21:22.654Z. Research depth: trimmed read. Deep read: the store's own data and 15 outside pages (the store's own product page; manual; maker page; review; blog; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); official safety test results (CREP, the Child Restraint Evaluation Program); official safety test results (NHTSA's Car Seat Ease of Use Ratings); official safety test results (ADAC's child seat test); video review (derived summary of its captions)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada: The CPSC recall search for Britax-dc / Poplar S returned no recall records, and Health Canada's recall open data has no records mentioning Britax-dc. No recall applies to this model on the sources read. Official safety test results were looked up directly with CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings, ADAC's child seat test: CREP, the Child Restraint Evaluation Program (Australia and New Zealand): CREP's published list is every seat it has rated, and no Britax Poplar or Poplar S appears in it; only other Britax Safe-N-Sound seats are listed, so this model has not been rated by CREP. NHTSA's Car Seat Ease of Use Ratings (United States): NHTSA rated the standard Britax Poplar (model E1C933QDI), not the Poplar S; it scored Rear-Facing overall 4 of 5 stars and Forward-Facing overall 3 of 5 stars. These are ease-of-use ratings, not crash-test results, and must not be carried over to the Poplar S. ADAC's child seat test (Germany, the UK and Europe): ADAC's published results since 2015 list many Britax Römer seats but no Poplar or Poplar S, so this model has not been tested there. Not read, because they are member-only or refused RoboTrunk: Consumer Reports car seat ratings, Which? child car seat tests, JPMA certified products.

• dimensions: The seat measures 20.5 x 17 x 23.5 inches.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• safety test: NHTSA's Car Seat Ease of Use Ratings list the standard Britax Poplar (model E1C933QDI, rated seat made 2024-06-29), not the Poplar S: Rear-Facing overall 4 of 5 stars and Forward-Facing overall 3 of 5 stars. These ratings measure ease of use (instructions, labels, vehicle installation features and securing the child), not crash protection. Source: https://api.nhtsa.gov/childSeats?dataSet=ratings. Source: https://api.nhtsa.gov/childSeats?dataSet=ratings (guide), read 2026-10-09T00:02:06.336Z.
• S features: The video shows the S adding two extra removable comfort inserts and the ReboundReduce stability bar over the standard Poplar.. Source: https://www.youtube.com/watch?v=1fqaUI8f4M8 (review), read 2026-10-09T00:03:24.713Z.
• open box condition: Open-box units are brand-new items that were returned or had their box opened; each is inspected and may show small cosmetic imperfections that do not affect use.. Source: https://dd1dfe-a3.myshopify.com/products/britax-open-box-poplar-s-clicktight-convertible-car-seat-slim-17-inch-design-arctic-onyx (guide), read 2026-10-09T00:01:57.750Z.
• manual availability: Britax lists user guides for Poplar S seats by model number and asks owners of other model numbers to contact customer service.. Source: https://us.britax.com/support/instructional-videos-and-user-manuals (manual), read 2026-10-08T23:22:29.330Z.
• variant SKU: The maker's Arctic Onyx Poplar S carries SKU E1D234Q-N.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• user guide: A Britax Poplar S user guide PDF is published by the maker.. Source: https://www.britax.co.nz/service-support/instructional-videos-and-user-manuals/?id=12364 (manual), read 2026-10-08T23:22:51.680Z.
• crash test: Independent crash-test analysis of this seat returned average results, with a better chest-clip sensor result than head sensor result; the test was run forward-facing, so it did not include the anti-rebound bar.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• width: The Poplar and Poplar S are described as among the skinniest car seats on the market, at 17 inches wide externally.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• overall sentiment: Aggregated sentiment for this seat is 67% positive across seven reviews.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• seat type: The article notes it is a 2-in-1 convertible, not an all-in-one, so there is no booster mode and another seat will eventually be needed.. Source: https://www.bemidjibest.com/britax-poplar-s-convertible-car-seat-review/ (blog, Bemidjibest, published 2026-08-18), read 2026-10-08T23:23:18.760Z.
• S versus standard Poplar: It states the S adds the ReboundReduce bar, a removable head pad and an upper-body support pillow over the standard Poplar, and weighs 28 lb against 27.2 lb, with no wider shell or higher child-weight limit.. Source: https://capitalkidz.com/blogs/news/britax-poplar-s-review (blog, Capital Kidz, published 2026-09-23), read 2026-10-08T23:23:21.189Z.
• harness slot heights: Harness slots adjust from 8 to 17 inches.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• adjustment: It demonstrates one-handed adjustment of both headrest and harness height with no rethreading.. Source: https://www.youtube.com/watch?v=1fqaUI8f4M8 (review), read 2026-10-09T00:03:24.713Z.
• returns: Open-box purchases are final sale and cannot be returned or exchanged.. Source: https://dd1dfe-a3.myshopify.com/products/britax-open-box-poplar-s-clicktight-convertible-car-seat-slim-17-inch-design-arctic-onyx (guide), read 2026-10-09T00:01:57.750Z.
• installation position: The black positioning runners under the base must sit entirely flat and parallel on the vehicle seat.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• belt installation: Vehicle-belt installation was among the easiest of the seats tested, helped by colour-coded, clearly labelled belt paths and the ClickTight lock-off; afterwards the seat felt rock-solid with barely any wiggle.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• measurements: Measured harness heights 7-18 in, shell height with headrest 29 in, shoulder width 14.25 in, crotch strap depths 3.5/5/6.5 in, seat depth 12 in, and seat weight 26.3 lb with padding and 25.4 lb without.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• positives: Users praise the easy ClickTight installation and how compact the seat is front-to-back rear-facing when installed upright for a toddler, suiting small back seats and tall front passengers.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• weight: It lists the product weight at about 28 lb and calls the seat fairly substantial to move between vehicles.. Source: https://www.bemidjibest.com/britax-poplar-s-convertible-car-seat-review/ (blog, Bemidjibest, published 2026-08-18), read 2026-10-08T23:23:18.760Z.
• seat type: It states the seat is not an infant carrier and not a belt-positioning booster.. Source: https://capitalkidz.com/blogs/news/britax-poplar-s-review (blog, Capital Kidz, published 2026-09-23), read 2026-10-08T23:23:21.189Z.
• buckle strap depths: Buckle strap depth adjusts from 4 to 7 inches.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• fabric and harness pads: The fabric is described as very soft to the touch and machine washable and dryable, with removable harness pads that have a sticky backing so they stay in place.. Source: https://www.youtube.com/watch?v=1fqaUI8f4M8 (review), read 2026-10-09T00:03:24.713Z.
• warranty: Open-box purchases carry a 1-year manufacturer's warranty.. Source: https://dd1dfe-a3.myshopify.com/products/britax-open-box-poplar-s-clicktight-convertible-car-seat-slim-17-inch-design-arctic-onyx (guide), read 2026-10-09T00:01:57.750Z.
• installation overhang: Up to 3 inches (7.5 cm) of the base may overhang the front edge of the vehicle seat, rear- or forward-facing.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• LATCH installation: LATCH installation was easier than average but not best in class; the hook-style connectors are harder to remove than push-button types because the strap must be loosened so the hook can be pushed forward.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• installation method: ClickTight is designed for seat-belt installation; the LATCH install is more complicated and the reviewer advises ignoring it unless there is no alternative.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• drawback: The most reported drawback is that it is not compatible forward-facing in vehicles with forward-angled headrests that cannot be removed.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• fit caveats: It says three-across fit is not guaranteed by the 17-inch width alone, and the seat can be bulky front-to-back depending on the vehicle and rear-facing recline.. Source: https://www.bemidjibest.com/britax-poplar-s-convertible-car-seat-review/ (blog, Bemidjibest, published 2026-08-18), read 2026-10-08T23:23:18.760Z.
• infant insert: It says the lower infant insert is required up to 22 lb rear-facing and must not be used above that weight or in forward-facing mode.. Source: https://capitalkidz.com/blogs/news/britax-poplar-s-review (blog, Capital Kidz, published 2026-09-23), read 2026-10-08T23:23:21.189Z.
• weight limits: The seat is for children from 5 to 65 lbs overall.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• features shown: It shows two removable dishwasher-safe cup holders, a recline indicator, a front handle for six recline positions, and the V-shaped top tether.. Source: https://www.youtube.com/watch?v=1fqaUI8f4M8 (review), read 2026-10-09T00:03:24.713Z.
• what is included: Open-box items include everything a brand-new product includes and ship in the original packaging, which may look scuffed.. Source: https://dd1dfe-a3.myshopify.com/products/britax-open-box-poplar-s-clicktight-convertible-car-seat-slim-17-inch-design-arctic-onyx (guide), read 2026-10-09T00:01:57.750Z.
• Poplar S differences: Over the standard Poplar, the S adds a removable head pad (optional), an upper body support pillow and the ReboundReduce Stability Bar.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• recline access: The recline adjuster sits under the seat near the base and is largely inaccessible once the seat is installed, especially rear-facing.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• ClickTight closing: The reviewer needed extra force and several attempts to close the ClickTight panel, and it felt as if the cover was in the way of the locking mechanism.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• comparisons: Some users prefer it to a Nuna Rava, citing flame-retardant-free fabric and better customer service, while others note all seats pass the same minimum standard and comparative test results are not published.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• installation caveat: ClickTight is called a major advantage, but the article says correct recline, belt routing, harness adjustment, tether use and vehicle compatibility still require careful reading of the manual.. Source: https://www.bemidjibest.com/britax-poplar-s-convertible-car-seat-review/ (blog, Bemidjibest, published 2026-08-18), read 2026-10-08T23:23:18.760Z.
• expiration: It lists a 10-year expiration for this model family.. Source: https://capitalkidz.com/blogs/news/britax-poplar-s-review (blog, Capital Kidz, published 2026-09-23), read 2026-10-08T23:23:21.189Z.
• rear-facing limits: Rear-facing is for children weighing 5-50 lbs and under 49 inches tall.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• ReboundReduce bar use: The ReboundReduce stability bar is used only in rear-facing mode.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• harness operation: The harness takes more effort than most to tighten, its pull strap is low on the seat, and loosening uses a hidden lever pushed forward rather than a button, with the fabric slit giving a poor view.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• vehicle head restraint fit: The egg-shaped shell does not work with vehicle seats whose head restraints angle forward prominently; in a Tesla Model X and Model 3 the head restraint pushed the seat's headrest forward so the back no longer touched the vehicle seat.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• front seat room: One user with a Mazda 3 says the seat makes the front seat a bit crowded but their husband still fits, and calls it one of the more compact seats on the market.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• evidence base: The article states it is an evidence-led product-fit guide and not an in-house hands-on installation or long-term test.. Source: https://capitalkidz.com/blogs/news/britax-poplar-s-review (blog, Capital Kidz, published 2026-09-23), read 2026-10-08T23:23:21.189Z.
• forward-facing limits: Forward-facing is for children weighing 30-65 lbs and under 49 inches tall.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• recline: There is a 6-position quick-adjust recline with an easy-read level indicator.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• buckle: The buckle button does not eject the prongs, which slide down the straps and must be retrieved each time; the chest clip is firm but can be opened one-handed.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• overhang and runners: Britax allows up to 3 inches of the base to overhang the vehicle seat's front edge, and the black positioning runners must sit flat and parallel to the vehicle seat.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• potty training insert: Users mention a Britax seat insert for potty training that absorbs accidents and can be washed, which few brands offer.. Source: https://redditrecs.com/travel-car-seat/model/britax-poplar-s-convertible-car-seat-slim-17-design/ (review), read 2026-10-08T23:23:15.172Z.
• forward-facing height: Forward-facing height limit is less than 49 inches.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cup holders: Two cup holders slide in and out and can be cleaned in the dishwasher.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• headrest movement: The 14-position no-rethread headrest and harness cover a 10-inch range but do not move as smoothly as some competitors.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• recline indicator: The recline ball must be in the blue for rear-facing and the green for forward-facing, and early printed manuals had incorrect illustrations while the online manual is correct.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• seat area: The seating area is 11 inches deep and 12 inches wide, with a 14-inch shoulder width.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cover care: The cover can be machine washed and dried rather than hand washed or air dried.. Source: https://www.britax.co.nz/root/poplar-s-arctic-onyx/5637237582.p (guide), read 2026-10-08T23:22:31.873Z.
• LATCH storage and tether: LATCH connectors store in a rear compartment without a closable pocket, and the long V-shaped tether's loose end dangles unless it is finessed.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• compactness: The seat is very compact front-to-back, slightly less so than a Graco Extend2Fit by about half an inch, and its larger recline range allows a more upright fit for older children.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• shoulder width: Shoulder width of the seating area is 14 inches.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cover refitting: The cover uses many hidden bungee attachments and took nearly 20 minutes to put back on in testing; removal is easier than replacement.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/britax-poplar-s (review), read 2026-10-08T23:22:56.430Z.
• LATCH limits: The LATCH weight limit is 35 lb in both rear- and forward-facing modes, centre LATCH with non-standard spacing is not allowed, and inflatable seat belts are not allowed.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• installation: ClickTight gives fully open, clearly labelled seat-belt paths and an automatic tensioner does the tightening.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• inserts and pads: Harness pads with a rubber grip are required in some weight ranges and optional on updated models with a 30 lb forward-facing limit; the lower infant insert has a 20 lb limit on new models, and the positioning layer's fold position depends on weight and mode.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• harness adjustment: The harness and headrest adjust together in 14 no-rethread positions.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• S upper body support: On the Poplar S the upper body support may only be used rear-facing for children weighing 5-20 lb.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• infant insert: A removable infant insert positions babies 22 lbs and under, and there are 2 further premium inserts.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cup holders and caps: Either the cup holders or the caps that cover their openings must be in place; the two caps are unlabelled and are likely to be lost.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• anti-rebound bar: The ReboundReduce stability bar attaches for rear-facing use to reduce movement in a crash.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cover care: The three-piece cover attaches with elastics, plastic tabs, tucks and snaps; all pieces including infant padding and belly pad machine wash and dry on gentle, but harness pads on seats made before December 2024 are sponge-clean only, which the reviewer flags for carsick children.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• fabric and care: The cover fabric is naturally flame-retardant with no added FR chemicals and is machine washable and dryable.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• cover refitting: Removing the cover took a few minutes, but putting it back took about 27 minutes, with the outer rim cover rated medium to difficult.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• safety structure: The seat has a SafeCell crumple zone and a V-shaped top tether, on a carbon steel frame and belt paths.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• lifespan and crash replacement: The seat is FAA-certified for aircraft use and has a 10-year lifespan; the top tether's coloured rip stitching shows a crash severe enough to need replacement, so the seat should not be carried by the tether.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• three across: The 17-inch SpaceSaver shell is designed to fit three across, but Britax cannot guarantee it in every vehicle.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.
• comparison to older Britax: The Poplar platform is one inch narrower and about two inches more compact front-to-back than the Boulevard/Marathon ClickTight and has an improved squeeze-button ClickTight panel.. Source: https://www.thecarseatpros.com/blog/poplarreview (blog, The Car Seat Pros, published 2026-01-04), read 2026-10-08T23:22:59.655Z.
• three across caveat: Britax does not guarantee three-across fitment in all vehicles.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-08T19:02:14.639Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, the manual, the maker's page, owner reviews, blogs, video reviews, the recall records of CPSC (United States) and Health Canada and the safety test results of CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings and ADAC's child seat test and searched for regulator recall notices and owner forums. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• Does the paint or coating on the seat shell rub off over time?
• Are any tools needed to install or adjust the seat?
• How thick is the padding compared with other convertible seats?
• Does the fabric stay comfortable in hot weather?
• Can the cover be bought as a replacement part later?
• Does the seat squeak or rattle while the car is moving?
• How do I check the open-box seat's manufacture date and expiry?
• Are replacement harness pads, buckles or cup holders sold separately?
• Does the open-box warranty cover parts that turn out to be missing?
• Will this seat fit three across next to two specific other seats?

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Buying works in one path. RoboTrunk's tools prepare a checkout at that store,
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agent may open the link and finish there, and payment always happens on the
store's own checkout page. RoboTrunk never takes the payment or sees a card.

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