SKU: 78253593316
britax marathon newborn

britax marathon newborn Britax Poplar S Convertible Car Seat

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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26

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Description

britax marathon newborn Britax Poplar S Convertible Car SeatThe Britax Poplar S Convertible Car Seat is the best space saving convertible car seat for parents seeking advanced crash protection, ClickTight fast installation, and 3 across seating capability in a compact 17 inch profile. This convertible combines advanced safety innovation, superior comfort, and space saving design to make every ride safer and simpler. Built with ClickTight installation technology and ReboundReduce stability bar, this seat

The Britax Poplar® S Convertible Car Seat is the best space-saving convertible car seat for parents seeking advanced crash protection, ClickTight® fast installation, and 3-across seating capability in a compact 17-inch profile. This convertible combines advanced safety innovation, superior comfort, and space-saving design to make every ride safer and simpler. Built with ClickTight® installation technology and ReboundReduce™ stability bar, this seat ensures a secure fit with minimal movement, giving parents confidence with every drive. Designed for long-term use, the Poplar® S transitions seamlessly from rear-facing (up to 50 lbs) to forward-facing (up to 65 lbs) without complicated conversion steps. Compare the Britax Poplar S to the Graco Extend2Fit: both offer extended rear-facing and forward-facing capability with adjustable headrests, but the Poplar S features ClickTight installation (3-step, pinch-thread-click system vs. traditional LATCH), ReboundReduce™ stability bar, SafeCell® crumple technology, patented V-shaped tether with staged-release stitches, naturally flame-retardant SafeWash® fabrics, 14-position no-rethread harness, 6 recline positions, carbon steel frame, 17-inch slim profile for 3-across seating, and 50+ years of Britax heritage. Choose Poplar S if you want premium crash protection, fastest installation, and compact 3-across capability; choose Graco Extend2Fit if you prioritize budget-friendly pricing. Inside, your child enjoys premium comfort with refined inserts, plush padding, and 6 recline positions for a custom fit at every stage of growth.

Inside, your child enjoys premium comfort with refined inserts, plush padding, and 6 recline positions for a custom fit. SafeWash® fabrics, naturally flame-retardant and machine washable, make cleanups effortless while maintaining Britax's commitment to quality and safety. The ClickTight® installation system simplifies setup with just three steps—open, thread and buckle the seat belt, then click it closed—for confident installations every time without confusion or error. The ReboundReduce™ stability bar helps minimize movement in the event of a crash when rear-facing, providing additional protection during the most critical early years. SafeCell® Technology acts as a crumple zone to absorb crash energy and divert it away from your child. The patented V-shaped tether with staged-release stitches helps slow and reduce forward movement during impact. The 5-point safety harness distributes crash forces evenly across your child's body for maximum protection. The carbon steel frame reinforces seat structure for strength and stability across thousands of miles. The 14-position headrest and harness adjust easily as your child grows without rethreading, eliminating annual maintenance hassles. Three premium comfort inserts, including one specifically designed for infants up to 22 lbs, provide plush, tailored support from birth through toddlerhood. The SpaceSaver™ slim 17-inch profile fits 3-across in most vehicles while maintaining interior comfort—a critical consideration for multi-child families. Six recline positions offer optimal comfort and vehicle fit for both rear- and forward-facing modes. Automatically-tensioning harness ensures the restraint is always secure and snug. Clearly labeled belt paths make installation straightforward and error-free for any caregiver. Dual removable, dishwasher-safe cup holders keep drinks within reach while simplifying cleanup. The naturally flame-retardant SafeWash® fabric is durable and safe to machine wash and dry for quick cleanup after spills and accidents.

Britax Poplar® S Convertible Car Seat Features:

  • ReboundReduce™ stability bar: Helps minimize movement in the event of a crash when rear-facing, providing added protection during critical early years

  • ClickTight® installation system: Simple three-step system—open, thread and buckle, click it closed—for confident installs every time without LATCH confusion

  • SafeCell® technology: Acts as a crumple zone to absorb crash energy and divert it away from your child

  • Patented V-shaped tether: Staged-release stitches help slow and reduce forward movement during impact

  • 5-point safety harness: Distributes crash forces evenly for maximum protection across torso and shoulders

  • Carbon steel frame: Reinforces seat structure for strength and stability across extended use

  • Naturally flame-retardant fabrics: SafeWash® materials are free from added FR chemicals for safer comfort

  • SpaceSaver™ slim 17-inch profile: Fits 3-across in most vehicles while maintaining interior comfort for all passengers

  • Refined comfort inserts: Three premium inserts, including one for infants up to 22 lbs, provide plush, tailored support

  • 14-position headrest and harness: Easily adjusts as your child grows without rethreading—annual adjustments simplified

  • Six recline positions: Offers optimal comfort and vehicle fit for both rear-facing and forward-facing modes

  • Automatic tensioner: Ensures the harness is always secure and snug throughout wear

  • Clearly labeled belt paths: Make installation straightforward and error-free for any caregiver

  • Dual removable cup holders: Dishwasher-safe for easy cleaning and convenient drink storage

  • SafeWash® fabric: Durable, naturally flame-retardant, chemical-free material that's safe to machine wash and dry

  • Convertible rear-to-forward transition: Smoothly transitions from rear-facing (up to 50 lbs) to forward-facing (up to 65 lbs) without complicated steps

  • Compact, space-saving design: Ideal for smaller vehicles, multi-seat setups, and families needing 3-across capability

Safety and Protection Features:

  • ClickTight® three-step installation: Industry's fastest installation system reduces setup errors and ensures secure fit every time

  • ReboundReduce™ stability bar: Minimizes crash movement during rear-facing collisions

  • SafeCell® crumple technology: Absorbs and redirects crash energy away from your child

  • V-shaped tether with staged-release stitches: Reduces forward movement during impact crashes

  • Carbon steel reinforced frame: Maintains structural integrity during collisions

  • Energy-absorbing shell: Multiple layers protect head, neck, and torso

  • 5-point harness system: Distributes forces evenly across safety zones

  • Automatic tension harness: Stays secure without manual tightening

Comfort and Convenience:

  • Six recline positions: Custom fit for sleeping newborns to alert toddlers

  • 14-position no-rethread headrest: Grows with child from birth through age 5+ without annual rethreading

  • Three premium comfort inserts: Newborn insert supports infants up to 22 lbs with proper spinal alignment

  • SafeWash® naturally flame-retardant fabric: Machine-washable comfort without added chemicals

  • SpaceSaver™ 17-inch slim profile: Maximizes cabin space while providing full-size interior comfort

  • Dishwasher-safe cup holders: Easy cleanup keeps seat fresh

Why Choose Britax Poplar S?

The Poplar S delivers exceptional value for parents seeking a space-efficient convertible with premium crash protection and installation ease. The ClickTight® system is the fastest installation available—no threading LATCH straps, no confusion about proper tension, just three intuitive steps. The 17-inch slim profile is unmatched in the convertible category, enabling true 3-across seating in vehicles where traditional convertible seats won't fit side-by-side. Combined with 50+ years of Britax safety heritage, advanced protection technologies like ReboundReduce™ and SafeCell®, and naturally flame-retardant SafeWash® fabrics, the Poplar S makes premium safety accessible and practical for modern families.

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78253593316

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4.5 ★★★★★
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Product Reviews
P
Verified Purchase
Peter
Grantham, US
★★★★★ 5
Great Product!!!
Color: Black
**Overall impression** The Anker MagSafe Charger Compatible, MagGo 3-in-1 is a seamless blend of practicality and modern design. It’s compact enough for a nightstand or desk, yet versatile enough to handle multiple devices in one tidy setup. If you value cable-free convenience and a tidy charging solution, this is a standout choice. **What I liked** - **Strong MagSafe performance**: The magnetic alignment feels precise, snapping right into place on my iPhone 13/14/15 with reassuring stability. Wireless charging is quick and steady, even with a case on (I tested a standard silicone case and a slightly thicker one). - **3-in-1 convenience**: It’s not just a charger for your phone—the MagGo 3-in-1 includes a dedicated spot for AirPods or other wireless earbuds and a small stand for Apple Watch or another device, depending on your setup. This eliminates clutter and keeps essentials within arm’s reach. - **Sleek, minimal design**: The matte finish and low-profile footprint look great on a nightstand or desk. It blends in with most decor and doesn’t draw unwanted attention to the charging area. **Build quality**: Solid construction with quality materials. The stand holds devices steadily, and the cable management is thoughtful, helping to reduce cable chaos. **Ease of use**: Set up is straightforward—just plug in, place devices, and you’re charging. The integrated design means fewer cables and an cleaner surface. **Bottom line** If you’re after a convenient, stylish, all-in-one charging solution, the Anker MagSafe Charger Compatible, MagGo 3-in-1 delivers. It’s reliable, well-built, and surprisingly versatile, making it a strong upgrade over standard single-device chargers. The few caveats around ultra-thick cases and watch-fit are minor trade-offs for the convenience and organization it brings to your space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
J
Verified Purchase
Jen Rodriguez
Cuba, US
★★★★★ 5
Reliable, sturdy, and well-designed
Color: Black
I bought the Anker MagGo 3-in-1 Charging Station for my husband at Christmas, and it’s been on his nightstand and used consistently ever since. We’ve tried similar multi-device chargers before, but they always felt cheaply made and didn’t hold up over time. This one is completely different. Right out of the box, it felt solid and well-built — definitely a noticeable step up in quality. It charges his phone, Apple Watch, and AirPods simultaneously without any issues, and the MagSafe connection is strong and secure. It keeps everything organized in one sleek spot, which makes the nightstand look cleaner and less cluttered. If you’re tired of flimsy charging stations that don’t last, this one is absolutely worth it. Reliable, sturdy, and well-designed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
S
Verified Purchase
Super Cool Person
Lowell, US
★★★★★ 5
Works Pretty Great
Color: Black, Color: Black
Used it for a month so far. It looks cool and has a very strong magnetic connection on both the phone and watch pads. The stand has a good amount of weight to the base of it while still being small and compact. I was able to charge both my phone and watch simultaneously and it seems to work pretty well, though I’ll update this review if it ever fails. I have an ESR case and it holds my iPhone 14 Pro very firmly and I can rotate or angle it any way I’d like on the stand. HTX Studio ran battery health charging tests across multiple iPhone using wired vs. wireless charging and proved that wireless charging barely but still noticeably improves battery health (doesn’t degrade it as much) over time since it charges slightly slower and can manage its heat slightly better because of that. Do keep in mind that wireless charging is about 50% as efficient as wired charging so you’ll spend around $8-12 per year charging your phone instead of $4-6 (which is negligible for the convenience it offers in my opinion). Price is a little steep but this is the best charging stand I could find on Amazon after lots of research. It does not have active cooling but it’s made of aluminum and similar materials so it should handle heat better than say a silicone one would. Overall, it looks pretty nice and does what’s asked of it. See attached photos. Screenshots are from my phone being charged on the stand. I tested it with my Apple watch (series 9) and phone at the same time, too, but that’s not in the pictures. Latest update: I had issues with Apple Watch charging during the WatchOS 26 Release Candidate update but the full release resolved those issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2025
E
Verified Purchase
EJ
Lexington, US
★★★★★ 5
These things work great for my apple products.
Color: White
Used for apple watch, iphone 15 Pro Max and air pods pro. Have one that was purchased elsewhere and given to me as a gift. Wanted another but was waiting for a price drop that was more in line with my feelings of what is a fair price. Amazon offered them at a decent price so sprung for a second. WHY? They are very stable. Doesn’t feel like it will tip even with my phone on there horizontally. Footprint is very small. I can put the phone both vertical and horizontal and it charges great with both an Ultra 3 watch and an apple watch 11. Can also charge the air pods at the same time. The best part that justifies the price is it comes WITH the watch charger right there on it. You don’t have to lace your own watch cord through some tiny space like some others I have owned. And the apple watch chargers are expensive. Would easily fit in a bag to carry with me. Although it doesn’t fold down for travel. Comes with the USB wall wort and the USB-C cable. C cable plugs into the single outlet on the back of the charging unit. No issues with overheating of devices. I bought the white one. The plastic charging pads for the phone and air pods are a light gray and they look good together and with the white. I just like white, but they have other colors. It also charges my Anker Soundcore rechargable earbuds. It has a white light that comes on when I put my items on the charger. I will absolutely be getting another. Have been buying Anker products for a while. Nearly all have been fabulous. BUT they did have a recall on a 5000 or 10000 mAH portable charging pack. Cannot remember which it was. But amazon notified me about it, even before the recall hit the news. Have had absolutely no problems with either one I have.
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Reviewed in the United States on March 16, 2026
B
Verified Purchase
bella
Lexington, US
★★★★★ 5
Awesome charger!
Color: White
I have a few Anker chargers and this is definitely a favorite! I usually charge my phone and watch simultaneously so I got this one for traveling. I love the way my phone stands on the charger. It’s great to check the time when waking up. It charges my watch very quickly so I can put it back on before falling asleep. The fast charge and compact form is great for traveling. It’s also easy to plug in and charge my phone, watch, and earbuds at home. Anker chargers are my favorite. I’ve never had an issue with them and they work forever.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026

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