The Britax One4Life® Slim ClickTight® All-in-One Car Seat is designed for parents who want a single seat to support their child from birth through big kid years. Built to last 10 years, it provides a seamless solution for every stage of growth from rear-facing infant mode to forward-facing toddler mode and belt-positioning booster. With its SpaceSaver™ slim design, it helps maximize backseat space while ensuring unmatched comfort and protection, making car rides safer and more convenient for the entire family.
Packed with premium features, the One4Life Slim combines ClickTight® installation technology for confident, three-step secure fitting, extended rear-facing up to 50 lbs., and forward-facing harnessed mode up to 65 lbs. As your child grows, it transitions easily into a high-back booster for up to 120 lbs. Engineered with SafeCell® Technology, a high-strength steel frame, V-shaped tether, and energy-absorbing foam, it offers superior crash protection. Added comforts include cooling channels, premium fabrics, machine-washable covers, dishwasher-safe cup holders, and a 15-position no-rethread harness for quick adjustments. Its compatibility to fit three across in most vehicles ensures it’s a practical choice for growing families.
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.
ClickTight® Installation: Install securely in three simple steps pinch, buckle, and click.
SpaceSaver™ Slim Design: At just 17.5” wide, fits three across in most vehicles without sacrificing comfort.
All-in-One Growth System: Transitions from rear-facing (5–50 lbs.) to forward-facing (30–65 lbs.) and booster (40–120 lbs.).
Extended Rear-Facing Use: Allows rear-facing up to 50 lbs. to keep your child safer longer.
Patented V-Shaped Tether: Reduces and slows forward movement during collisions.
SafeCell® Technology: Built-in crumple zone absorbs crash energy to protect your child.
High-Strength Steel Frame: Reinforces stability and durability for long-lasting safety.
15-Position No-Rethread Harness: Adjust headrest and harness height quickly with one hand.
Cooling Channels: Promotes airflow to keep children comfortable during long rides.
Premium Fabrics: Made from recycled polyester with soft, knit fabric and mélange accents.
Easy Maintenance: Wipe-clean base, machine-washable cover, and dishwasher-safe cup holders.
Built-In Armrests: Provides added comfort for growing kids.
Product Dimensions: | 18.5" L x 17.5" W x 24.5" H |
Product Weight: | 28 lbs |
Booster Height: | 44"–63" |
Harness Slot Heights: | 9"–19" |
Buckle Strap Depths: | 5.5"–8.75" |
Seat Area Depth/Width: | 13.5" / 11.5" |
Shoulder Width: | 14" |
Recommended Use | |
Child Weight Range: | 5–120 lbs |
Rear-Facing Harnessed Weight: | 5–50 lbs |
Forward-Facing Harnessed Weight: | 30–65 lbs |
Belt-Positioning Booster Weight: | 40–120 lbs |
Rear-Facing Harnessed Height: | 18"–49" |
Forward-Facing Harnessed Height: | 35"–49" |
Brand: | Britax |
Parchment Manufacturer SKU: | BRIE1D437G |
UPC: | 652182750046 |
Raven Black Manufacturer SKU: | E1D437A |
UPC: | 652182749989 |
Mineral Gray Manufacturer SKU: | E1D437B |
UPC: | 652182750008 |
Sea Foam Manufacturer SKU: | E1D437F |
UPC: | 652182750039 |
Yes, the silicone pocket is food-safe and designed to catch food without harming your child.
Yes, the Velcro closure is adjustable to fit babies and toddlers as they grow.
Absolutely, the fabric rolls into the silicone pocket for easy storage in a diaper bag.
No, the design ensures the pocket does not get in the way at the table or in a highchair.
Yes, the bib is machine washable for easy cleaning.
The Velcro closure is secure to resist your tot’s tugging while remaining adjustable for comfort.
It is made of soft fabric with a food-safe silicone pocket and a hook-and-loop closure.
Yes, it weighs only 3.38 ounces, making it comfortable for daily use.
Yes, it is specifically designed to work on highchairs without obstructing feeding.
No, the roll-up design tucks the fabric neatly into the silicone pocket, keeping it clean and ready for the next meal.