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Britax Poplar Convertible Car Seat

Britax Poplar Convertible Car Seat

Regular price $349.99
Sale price $349.99 Regular price
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Color|Magenta Onyx
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Might Not Arrive in Time for Christmas

The Britax Poplar Convertible Car Seat makes every stage simpler with easy ClickTight® installation and a slim SpaceSaver™ design that fits 3-across in many vehicles. It offers extended rear-facing up to 50 lbs and transitions to forward-facing up to 65 lbs, giving your child a safe, comfortable ride for years.

Premium FR-free fabrics, a 14-position no-rethread harness, and multiple recline options help you get the perfect fit at every age. Built with Britax’s trusted safety features — including a carbon steel frame, SafeCell® crumple zone, and a V-shaped top tether — the Poplar delivers strong protection in a compact footprint. With machine-washable covers and dishwasher-safe cup holders, it’s as parent-friendly as it is kid-comfortable.

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Product Specs

Modes: Rear-facing + Forward-facing

Rear-Facing Weight Range: 5–50 lbs

Forward-Facing Weight Range: 30–65 lbs

Harness Type: 5-point, no-rethread (14-position)

Recline Positions: 6-position quick-adjust

Installation Method: ClickTight® (seat belt), LATCH compatible

Seat Width: 17 inches (SpaceSaver™ design)

Fabrics: Naturally flame-retardant, machine-wash & dry

Safety Features:


  • SafeCell® crumple zone

  • Carbon steel frame

  • V-shaped top tether

  • Side-impact absorbing structure

    Cup Holders: 2 removable & dishwasher-safe

    Cover Care: Machine-wash & dryer-friendly

Why we love it

  • ClickTight = zero installation stress. Truly one of the easiest installs on the market.
  • Rear-facing up to 50 lbs means extended safety for longer.
  • SpaceSaver™ slim width fits beautifully in sedans, SUVs, and 3-across situations.
  • Premium, naturally FR-free fabrics that wash and dry right at home.
  • Grows with your child — 14-position harness + infant insert included.
  • Cup holders that don’t get gross because they’re removeable and dishwasher-safe.
  • Britax safety pedigree with SafeCell®, V-shaped top tether, and steel frame construction.

What’s Included

  • Britax Poplar Convertible Car Seat
  • Infant insert
  • Two (2) removable, dishwasher-safe cup holders
  • Machine-washable seat cover (pre-installed)

Commonly Asked Questions

What makes the Britax Poplar S different from the standard Britax Poplar?

A: The Poplar S includes several upgraded features that the standard Poplar does not have. The most significant difference is the ReboundReduce™ stability bar, which enhances rear-facing crash performance. In addition, the Poplar S features more premium materials and comfort upgrades.

Feature Poplar S Poplar (Standard)
ReboundReduce™ Stability Bar ✔ Included (rear-facing crash-stability bar) ✘ Not included
Premium Inserts ✔ Enhanced padding & comfort inserts ✔ Standard inserts
Fabrics ✔ Higher-grade premium fabrics (FR-free) ✔ Standard fabrics (FR-free)
Positioning Upgraded / step-up model Base model
Price Point Higher due to added features Lower

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