



The Britax Poplar® S Convertible Car Seat combines advanced safety innovation, superior comfort, and a space-saving 17-inch profile 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). 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.
Britax is a globally trusted leader in child safety, known for its innovative, high-quality strollers, car seats, and travel systems designed to support families on every journey. With a legacy of over 50 years, Britax is committed to creating products that prioritize safety, comfort, and convenience. From advanced crash protection technology to thoughtfully designed features that simplify daily life, Britax helps parents travel confidently, knowing their little ones are secure and comfortable wherever they go. Explore Britax at ANB Baby for trusted gear that grows with your family.
ReboundReduce™ Stability Bar: Helps minimize movement in the event of a crash when rear-facing.
ClickTight® Installation: Simple three-step system — open, thread & buckle, click it closed — for confident installs every time.
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.
Carbon Steel Frame: Reinforces seat structure for strength and stability.
Naturally Flame-Retardant Fabrics: Free from added FR chemicals for safer comfort.
SpaceSaver™ Slim Build: 17” width fits 3-across in most vehicles while maintaining interior comfort.
Refined Comfort Inserts: Three premium inserts (including one for infants up to 22 lbs) for plush, tailored support.
14-Position Headrest & Harness: Easily adjusts as your child grows without rethreading.
6 Recline Positions: Offers optimal comfort and vehicle fit for both rear- and forward-facing modes.
Dual Cup Holders: Removable and dishwasher-safe for easy cleaning.
SafeWash® Fabric: Durable, chemical-free fabric that’s safe to machine wash and dry for quick cleanup.
Automatic Tensioner: Ensures the harness is always secure and snug.
Clearly Labeled Belt Paths: Make installation straightforward and error-free.
Convertible Use: Transitions smoothly from rear-facing to forward-facing as your child grows.
Compact Design: Ideal for smaller vehicles or multi-seat setups.
| Dimensions: | 20.5" L × 17" W × 23.5" H |
| Harness Slot Heights: | 8"–17" (14 adjustable positions) |
| Buckle Strap Depths: | 4"–7" |
| Seat Area (Depth × Width): | 11" × 12" |
| Shoulder Width: | 14" |
| Frame Material: | Carbon steel |
| Fabric Type: | SafeWash® fabric (FR chemical-free) |
| Installation Type: | ClickTight® system with vehicle seat belt |
| Stability Feature: | ReboundReduce™ anti-rebound bar |
| Cup Holders: | 2 removable, dishwasher-safe |
| Recline Positions: | 6 |
| Safety Technologies: | SafeCell® crumple zone, V-shaped tether, 5-point harness |
| Fit Compatibility: | Fits 3-across in many vehicles |
| Convertible: | Rear-facing and forward-facing |
| Recommended Use | |
| Rear-Facing Weight Range: | 5–50 lbs |
| Forward-Facing Weight Range: | 30–65 lbs |
| Maximum Child Height: | Less than 49" |
| Care Instructions: | Machine wash and dry fabrics |
| Brand: | Britax |
| Sand Onyx Manufacturer SKU: | E1D233V |
| UPC: | 652182750404 |
| Stone Onyx Manufacturer SKU: | E1D233M |
| UPC: | 652182750329 |
| Cowmooflage Manufacturer SKU: | E1D231Q |
| UPC: | 652182750282 |
| Ruby Onyx Manufacturer SKU: | E1D234E |
| UPC: | 652182750435 |
| Arctic Onyx Manufacturer SKU: | E1D234Q |
| UPC: | 652182750466 |
| Onyx Manufacturer SKU: | E1D233S |
| UPC: | 652182750374 |
The Poplar® S includes the ReboundReduce™ Stability Bar and refined comfort inserts for enhanced safety and luxury.
It helps minimize movement in the event of a crash, adding an extra layer of protection when rear-facing.
Simply open the seat, thread and buckle the seat belt, then click it closed for a secure, foolproof install.
Yes, the SafeWash® fabric is both machine washable and dryer safe, and contains no added flame-retardant chemicals.
The 17-inch slim design allows up to three seats across in most standard backseats.
It supports rear-facing from 5–50 lbs and up to 49" in height.
Britax recommends keeping your child rear-facing as long as possible, then switching to forward-facing (30–65 lbs).
Yes, two removable dishwasher-safe cup holders are included for convenience.
The 14-position Quick-Adjust system allows easy one-handed height and fit adjustments without rethreading.
It features a carbon steel frame, SafeCell® impact protection, and chemical-free SafeWash® fabrics for total peace of mind.
















