Britax One4Life ClickTight All-in-One Car Seat


Regular price $399.99


One4Life takes your child from birth to big kid with Britax Safety and ClickTight Installation. It easily converts from a rear-facing infant car seat, to a forward-facing 5-point harness seat, to a high-back belt-positioning booster seat. The Cool Flow mesh fabric improves air flow, keeping your child comfortable for the ride. ClickTight is as easy as buckling a seat belt, so you can install with confidence, every time. Color-coded belt paths show you where to route the seat belt for each installation mode. Plus, easy-read indicators help you find the correct recline angle. A high strength steel frame, crumple zone, and V-shaped tether help absorb crash energy. And, 2 layers of side impact protection surround your child’s head, neck and torso. As your baby grows, adjust the 15-position headrest & harness in seconds to create the perfect fit. When it’s time for booster mode, simply tuck the harness into the built-in storage compartment.

Recommendation – Britax strongly recommends:

  • Children ride rear-facing to the highest weight or height specified
  • Children should remain in a child seat with a 5-point harness until reaching the maximum weight or height allowed
  • The top tether be used at ALL times when installing the child restraint forward-facing.

 Actual product may vary from image. Britax reserves the right to substitute fabrics or parts and/or make substitutions.



Child Weight 5-120 lbs
Product Dimensions 20.5" x 19.5" x 25"
Seat Area Depth/Width 13.25" / 11"
Harness Slot Heights 9" - 19"
Buckle Strap Depths 5.5" - 8.75"
Rear-Facing Harnessed Weight 5-50 lbs
Rear-Facing Harnessed Height Less than 49"
Forward-Facing Harnessed Weight 22-65 lbs
Forward-Facing Harnessed Height Less than 49"
Belt Positioning Booster Weight 40-120 lbs
Belt Positioning Booster Height 44" - 63"

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