One4Life® Slim All-in-One Car Seat

Details & care

One4Life® Slim takes your child from birth to big kid with Britax® safety, ClickTight® installation, and a slim 17.5” design that grows with your child for 10 years. It’s easy to clean, and the cover is safe to machine wash and dry..

Why parents will love it: The One4Life® Slim all-in-one car seat starts rear-facing with an extended capacity of up to 50 lbs, so your child can ride rear-facing longer. It easily converts to forward-facing toddler mode (up to 65 lbs) and high-back, belt-positioning booster mode (up to 120 lbs) when your child is ready. With a slim outside and spacious inside, the 17.5” seat is designed to fit 3 across in most vehicles without compromising safety and comfort. ClickTight® helps you install with confidence every time. The base and shell are easy to wipe down for hassle-free cleanup. The naturally flame-retardant car seat cover is safe to machine wash and dry and has no added FR chemicals. One4Life Slim features a high-strength steel frame, a SafeCell® crumple zone and a V-shaped tether. As your child grows, you can easily adjust the 15-position no-rethread harness and headrest with one hand.

Why kids will love it: The dishwasher-safe cup holders keep your child’s favorite snacks and drinks close, and they slide out with ease for convenient cleaning between rides. Soft comfort pads help prevent the harness from rubbing against your child’s skin, while plush padding helps provide superior comfort. Built-in cooling channels improve airflow and the tag-free headrest supports your child’s head and neck without irritation.

Child weight/height: 5-120 lb.; belt positioning booster height: 44" - 63"; rear-facing harnessed weight: 5-50 lb.; forward-facing harnessed weight: 30-65 lb.; belt positioning booster weight: 40-120 lb.

Car seat weight/dimensions: 30 lb.; 20.5" x 19.5" x 25".

Safety features: This all-in-one car seat features a high-strength steel frame, SafeCell® technology and a V-shaped tether, helping to give you peace of mind for the road ahead.

Harness: As your child grows, you can easily adjust the 15-position harness with just one hand — no rethreading required.

Car installation: Thanks to ClickTight technology, you can install the seat with confidence, every time.

Stroller compatibility: N/A.

This item is eligible for return in its original, unopened box only.

• One Car Seat for Life: Designed to grow with your child for 10 years, this all-in-one car seat easily converts from a rear-facing infant and toddler car seat (5-50 lbs) to a forward-facing car seat with a harness (30-65 lbs) and, finally, to a high-back booster (40-120 lbs)
• Fast, Secure & Parent-Friendly Installation: With ClickTight® technology, you can install with confidence in 3 easy steps: pinch to open, thread and buckle and click it closed. The accessible color-coded belt paths make it easy to route the seat belt through the correct path for each mode
• Slim 17.5” SPACESAVER­™ Seat: Designed to fit 3 across* without compromising on trusted Britax safety or premium comfort, offering a slim outside and spacious inside. *Britax cannot guarantee 3-across installation fitment in all vehicles
• Extended Rear-Facing Capacity: Accommodates children up to 50 lbs and 49” rear-facing, so your child can ride rear-facing longer
• Trusted Britax Safety: This slim car seat features a patented V-shaped tether, SafeCell® technology, a high-strength steel frame and two layers of energy management. The seat is side-impact tested according to FMVSS 213a.* It is also tested to FMVSS 213 frontal-impact standards. The seat is verified by the Baby Safety Alliance. *FMVSS 213a sets side-impact standards for children up to 40 lbs and 43” with a 5-point harness. It does not include standards for testing harnessed children above 40 lbs and 43” or for booster mode
• Naturally Flame-Retardant Safewash® Fabrics: The cover is safe to machine-wash and dry and naturally flame-retardant with no added FR chemicals
• Easy-Adjust, 15-Position, No-rethread Harness: One-hand adjustments make it easy to find the right fit for your child as they grow. The 15-position harness and headrest move together easily—no rethreading required
• Quick-Push, 9-Position Recline: With easy-read indicator to help you find the correct angle for your vehicle
• Hassle-Free Cleanup: Extra space between the shell and base means you can clean under the seat with ease – and with minimal grooves in the seating area and base, you can wipe it down with no fuss. The slide-out cupholders are also dishwasher-safe for convenient cleaning
• Timeless Aesthetic, Premium Comfort: Features soft knit fabrics in warm, neutral fashions with woven mélange accents that are made from recycled polyester. This slim car seat also includes plush padding, built-in cooling channels, three infant inserts and a tag-free headrest
• Steel/plastic/textile
• Imported
• Item #11583008
• Core Product ID 33333BDXNC