Britax One4Life ClickTight All-in-One Car Seat

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Enjoy safe travels from birth to big kid with the Britax One4Life all-in-one car seat. This car seat features 4 configurations, including rear facing infant car seat, rear facing toddler car seat, forward facing 5 point harness car seat, and forward facing high back booster seat. Start out with the rear facing car seat for infants and toddlers, then graduate to the forward facing car seat and booster car seat for preschoolers and big kids. ClickTight technology makes it easy to install your new baby car seat with confidence. Simply open the seat, follow the path to thread the seat belt, buckle it, and click the seat closed. The One4Life all in one car seat is outfitted with a high-strength steel frame, a SafeCell crumple zone, and a patented V-shaped tether. The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe. The easy-pull adjuster lets you move the 15-position headrest and no-rethread harness at the same time, so you can find a secure fit in seconds. Quickly adjust between 9 recline positions and use the easy-read level indicators to find the correct angle. The Britax One4Life comes with an easy-to-remove, machine-washable cover, and the knit construction is naturally flame-retardant.

  • EASILY CONVERTS: From a rear-facing infant seat (5-50 lbs) to a forward-facing 5 point harness seat (22-65 lbs) to a high-back belt-positioning booster seat (40-120 lbs)
  • CLICKTIGHT INSTALLATION: Unobstructed seat belt paths clear the way for confident installation, and the automatic tensioner takes care of the tightening
  • PATENTED V-SHAPED TETHER: The staged-release stitches helps slow and reduce forward movement during a crash
  • SAFECELL TECHNOLOGY: Acts as a crumple zone, absorbing crash energy to help keep it away from your child
  • BUILT-IN COOLING CHANNELS: The ventilated mesh helps improve air flow to keep your child comfortable
  • NO ADDED FR CHEMICALS: Naturally flame-retardant fabrics and foam with no added FR chemicals
  • STAY-PUT, SOFT COMFORT PADS: Helps prevent the harness from rubbing against your child’s delicate neck
  • FLIP-FORWARD BUCKLE PAD: Stays out of the way for easy boarding; made with extra padding for premium comfort
  • COLOR-CODED BELT GUIDES: Make it easy to route the seat belt through the correct paths for rear-facing, forward-facing and booster mode
  • HARNESS HOLDER SLOTS: Help keep the harness straps out of the way while your child gets in and out of the seat
  • 2 LAYERS OF ENERGY MANAGEMENT: The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe 


  • Product Dimensions: 20.5" x 19.5" x 25"
  • Rear-facing Harnessed Weight:5-50 lbs
  • Forward-facing Harnessed Weight:22-65 lbs
  • Belt Positioning Booster Weight:40-120 lbs
  • Seat Area Depth/Width:13.25" / 11"


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