Britax Poplar S Convertible Car Seat

The Britax Poplar S Convertible Car Seat is designed to support your child from the rear-facing stage into forward-facing harness use. Its slim 17" SpaceSaver™ design helps preserve valuable back-seat space, while Britax ClickTight® installation is designed to make secure installation easier and more intuitive.

The Poplar S supports rear-facing children from 5–40 lbs and forward-facing children from 22–65 lbs. A ReboundReduce™ Stability Bar is included for rear-facing use to help minimize seat movement during a crash, while the carbon steel frame, SafeCell® technology and five-point harness provide additional structural and energy-management support.

Slim Convertible Car Seat With ClickTight®

At just 17" wide, the Poplar S is built with a slim exterior while maintaining a spacious seating area for your child. This makes it a practical option for families looking to preserve rear-seat space without giving up everyday comfort.

ClickTight® installation uses a simple open, route-and-buckle, then close process to help make vehicle installation more straightforward.

Poplar S Key Features

• Convertible design supports rear-facing and forward-facing harness use
• Rear-facing weight range of 5–40 lbs
• Forward-facing harness range of 22–65 lbs
• Slim 17" SpaceSaver™ design helps preserve back-seat space
• ClickTight® installation helps simplify secure vehicle installation
• ReboundReduce™ Stability Bar attaches for rear-facing use and helps minimize movement during a crash
• Carbon steel frame reinforces the car seat structure
• SafeCell® technology is designed to act as a crumple zone and help manage crash energy
• Five-point harness helps distribute crash forces across the child's body
• 14-position quick-adjust headrest and harness grow with your child
• No-rethread harness adjustment simplifies fit changes as your child grows
• Six-position quick-adjust recline helps improve both child comfort and vehicle fit
• Premium infant inserts and padding provide additional support for smaller children
• Two removable dishwasher-safe cup holders simplify everyday cleaning
• SafeWash® fabrics are machine washable and dryer safe
• Fabrics are naturally flame resistant with no added flame-retardant chemicals

Britax Poplar S Specifications

• Rear-facing weight: 5–40 lbs
• Rear-facing height: Less than 49"
• Forward-facing weight: 22–65 lbs
• Forward-facing height: Less than 49"
• Overall child weight range: 5–65 lbs
• Product dimensions: 20.5" L × 17" W × 23.5" H
• Seat area: 11" deep × 12" wide
• Shoulder width: 14"
• Harness slot heights: 8" to 17" across 14 positions
• Buckle strap depths: 4–7"
• Useful life: 10 years

Rear-Facing Stability Bar

The included ReboundReduce™ Stability Bar is designed for rear-facing installation and helps reduce rebound movement in the event of a crash. This provides an additional stability feature during the rear-facing stage.

Growing Comfort and Fit

The 14-position headrest and harness adjust together to help maintain a proper fit as your child grows. Six recline positions allow additional flexibility for both vehicle installation and child comfort.

Premium inserts and padding provide added support for smaller riders, while the slim exterior keeps the seat compact across the vehicle bench.

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ClickTight® Installation and Slim Fit

The combination of ClickTight® installation and the 17" SpaceSaver™ design makes the Poplar S especially practical for families who want a convertible car seat that is straightforward to install and takes up less width across the back seat.

Easy-Care SafeWash® Fabrics

The Poplar S uses SafeWash® fabrics that are safe to machine wash and dry, helping make cleanup easier after everyday spills and messes. The fabrics are naturally flame resistant and contain no added flame-retardant chemicals.