Britax One4Life Slim ClickTight All-in-One Car Seat

One4Life® Slim takes your child from birth to big kid with Britax safety, ClickTight® installation, and a slim 17.5” design, growing with your child for 10 years.

The One4Life® Slim all-in-one car seat takes your child from birth to big kid with trusted Britax safety, ClickTight® installation, and a slim SpaceSaver™ design. As a convertible and harness-2-booster seat in one, it grows with your child for 10 years. It 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* 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 car seat cover is safe to machine wash and dry, and it’s naturally flame-retardant with 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. With cooling channels, premium padding, three infant inserts, and built-in armrests, your child will love every ride. *Britax cannot guarantee 3-across fitment in all vehicles.

Product Specs

Product Dimensions: 18.5" x 17.5" x 24.5"

Harness Slot Heights: 9" - 19"

Buckle Strap Depths: 5.5" - 8.75"

Child Weight: 5-120 lbs

Rear-facing Harnessed Height: 18”- 49”

Forward-facing Harnessed Height: 35"- 49"

Belt Positioning Booster Height: 44" - 63"

Rear-facing Harnessed Weight: 5-50 lbs

Forward-facing Harnessed Weight: 30-65 lbs

Belt Positioning Booster Weight: 40-120 lbs

Seat Area Depth/Width: 13.5" / 11.5"

Shoulder Width: 14"