The Britax One4Life ClickTight is a convertible-to-booster car seat that grows with your child from 5 to 120 lbs, offering three modes of use with ClickTight installation confidence.

Key Features

• Converts from rear-facing infant seat to forward-facing 5-point harness seat to high-back belt-positioning booster, accommodating children from 2.3 to 54 kg (5–120 lbs) and up to 160 cm (63″) tall — designed for up to 10 years of use.
• ClickTight installation lets you install with confidence every time in just 3 easy steps: open, thread & buckle, click it closed.
• SafeCell® crumple zone technology absorbs crash energy to help keep it away from your child, paired with a high-strength steel frame that reinforces the seat structure.
• Patented V-shaped tether with staged-release stitches helps slow and reduce forward movement during a crash.
• 2 layers of Energy Management — the protective seat shell and foam-lined headrest help absorb impact energy and are designed to protect your child's head, neck, and body.
• 15-position quick-adjust headrest and harness move together using one hand for the proper fit as your child grows — no rethreading ever.
• SafeWash® cover is safe to machine wash and dry; knit construction is naturally flame retardant.
• 9-position quick-adjust recline with easy-read level indicators helps you find the correct angle for your vehicle and the most comfortable fit for your child.
• Built-in cooling channels and ventilated mesh improve air flow to keep your child comfortable on every ride.
• Dishwasher-safe cup holders easily twist out for cleaning between rides.

Specifications

Frequently Asked Questions

How long can my child use the One4Life?

The One4Life is designed for up to 10 years of use, from 2.3 kg (5 lbs) rear-facing all the way to 54 kg (120 lbs) and 160 cm (63″) tall in booster mode.

Is the ClickTight system compatible with all vehicles?

ClickTight uses your vehicle's seat belt for installation. It works with most vehicles — simply open the front of the seat, thread and buckle the seat belt, then click it closed. No LATCH connectors are needed for forward-facing or booster modes.

Can I machine wash the seat cover?

Yes. The SafeWash® cover is safe to machine wash and dry. The knit construction is naturally flame retardant, so no chemical treatments are needed.

How do I adjust the harness as my child grows?

The 15-position headrest and harness move together with one hand — no rethreading required. Simply slide the headrest to the correct height and the harness adjusts automatically.

Good to Know

Britax strongly recommends that children remain secured with the harness system until they exceed the specified weight or height limits. Products and components are subject to change without notice and may vary from images depending on the model.