One4Life convertible to booster car seat grows with your child for 10 years—from 5-120 lbs & up to 63” tall. As the only all-in-one with ClickTight, it’s easy to install in seconds, so you’ll know it’s right. Every time. Travel with peace of mind, knowing your child is surrounded in Trusted Britax Safety and Full Body Protection.

• Converts from a rear-facing infant seat (5- 50lb) to a forward-facing 5-point harness seat (22-65 lbs) to a high-back belt-positioning booster seat (40- 120lb).
• 10 years of use: grows with your child from 5 – 120 lbs.
• ClickTight Installation. Install with confidence, every time. You’ll know it’s right in just 3 easy steps: Pinch to open. Thread & buckle. Click it closed.
• 15-Position, Quick-Adjust Headrest & Harness create the proper fit as your child grows.
• Patented V-Shaped Tether with staged-release stitches helps slow and reduce forward movement during a crash.
• High Strength Steel Frame reinforces the seat structure to help keep it sturdy and stabilized.
• Quick-Push, 9-Position Recline helps you find the most comfortable fit for your child and the best fit for your vehicle.
• SafeCell Technology acts as a crumple zone, absorbing crash energy to help keep it away from your child.
• Easy-Read Level Indicators help you find the correct recline angle when installing the car seat.
• 2 Layers of Side Impact Protection: Energy-absorbing shell and foam-lined surround your child’s head, neck & torso.
• Stay-Put, Soft Comfort Pads help 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.
• Built-In Cooling Channels & Ventilated Mesh improve air flow to keep your child comfortable.
• Color-Coded Belt Guides make it easy to route the seat belt through the correct paths for rear-facing, forward-facing, and booster mode.
• Removable Cover for easy cleaning without taking off the harness.
• Harness Compartment neatly stores straps and buckles within the seat while in booster mode.
• Dishwasher-Safe Cupholders easily twist out for cleaning between rides.
• Removable Infant Insert helps keep your tiny baby safe and comfortable under 20 lbs.
• Removable Head Pillow provides additional comfort for your growing baby.
• Easy-Pull Harness Adjuster lets you tighten the harness using just one hand.
• Harness Holder Slots keep the harness straps out of the way while your child gets in and out of the seat.
• Tether Storage keeps the tether straps organized and out of the way when not in use.
• Built-In Arm Rests keep your child happy and comfortable while they ride.
• 5-Point Safety Harness with diamond weave webbing.
• Tag-Free Headrest supports your child’s head and neck without irritation.