Britax One4Life ClickTight (Onyx SafeWash)

One4Life takes your child from birth to big kid with Britax Safety and ClickTight Installation. It converts from a rear-facing infant seat, to a forward-facing 5-point harness, to a high-back belt-positioning booster. The SafeWash cover is safe to machine wash and dry. ClickTight is as easy as buckling a seat belt, so you can install with confidence, every time. 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.

  

10 Years of Use
One4Life convertible to booster car seat grows with your child from 5 – 120 lbs (2.26 - 54.43 kg) and up to 63” (160 cm) tall.
 
One4Life
Coverts from a rear-facing infant car seat, to a forward-facing 5-point harness, to a high-back belt-positioning booster.
 
Install Confidently
Allows you to install with confidence, every time. You’ll know it’s right in just 3 easy steps: Pinch to open. Thread & buckle. Click it closed.
  
Colour-Coded Belt Guides
Make it easy to route the seat belt through the right paths for rear-facing, forward-facing, and booster mode. 
  
Easy-Read Level Indicators
Help you find the correct recline angle for your vehicle.
 
Britax Safety
High strength steel frame & crumple zone help absorb crash energy; patented v-shaped tether.
   
SafeCell Technology
Acts as a crumple zone, absorbing crash energy to help keep it away from your child.
  
High Strength Steel Frame
Reinforces the seat structure to help keep it sturdy and stabilized.
 
Patented V-Shaped Tether with Staged-Release
Stitches helps slow and reduce forward movement during a crash.
  
Energy-Absorbing Chest Pads
Reduce your child’s forward movement during collision.
 
Full Body Protection
2 layers of side impact protection surround the head, neck & torso.
 
Removable Infant Insert
Helps keep your tiny baby safe and comfortable under 20 lbs (9.07 kg).
  
No Rethreading, Ever
15-position harness & headrest move together using one hand for the proper fit as your child grows.
   
Relax & Recline
9-position, quick-adjust recline & easy-read level indicators help your find the correct angle for your vehicle & most comfortable fit for your child.
 
SafeWash™ Cover
Safe to machine wash and dry; knit construction is naturally flame retardant.
 
More Comfort
Plush foam padding and fabrics for premium comfort & a quiet ride.
 
Stay-Put, Soft Comfort Pads
Help prevent the harness from rubbing against your child’s delicate neck. 
  
Tag-Free Headrest
Supports your child’s head and neck without irritation.   
  
Built-In Cooling Channels & Ventilated Mesh
Improve air flow to keep your child comfortable.
  
Dishwasher-Safe Cupholders
Easily twist out for cleaning between rides.
 
Proudly Designed, Tested & Built in the USA
With US and global components for safety and quality.

 
Certified for Aircraft Travel
When used in Harness Mode.

 

Specifications

  

Britax strongly recommends that children should be secured with a harness system until they exceed the weight or height limits specified.

• Child Fit Requirements
• Rear-Facing
• Child Weight: 5-50 lbs (2.2-22.6 kg)
• Child Height (in): Less than 49 (124.4 cm)
• Forward-Facing Harness
• Child Weight: 22-65 lbs (9.9-29.4 kg)
• Child Height (in): Less than 49 (124.4 cm)
• Belt Positioning Booster
• Child Weight: 40-120 (18.1-54.4 kg)
• Child Height (in): 44-63 (111.7-160 cm)

• Product Weight: 30 lbs (13.6 kg)
  

• Product Dimensions (in): 20.5 L x 19.5 W x 25 H (52 L x 49.5 W x 63.5 H cm)
  

• Headrest Fully Extended Height (in): 33.5 (85 cm)
  

• Interior Product Dimensions
• Seating Area Depth (in): 13.25 (33.65 cm)
  
• Seating Area Width (in): 11 (27.9 cm)
  
• Shoulder Width (in): 14 (35.5 cm)
  
• Harness Slot Heights (in): 15 positions, 9-19 (22.8-48.2 cm)
  
• Buckle Strap Positions (in): 5.5/6.75/8.75 (13.97/17.14/22.22 cm)

• Other Useful Information
• Car Seat Orientation: Rear-to-Forward-Facing

• Expiration/Lifespan: 10 years from date of manufacture

• NOT compatible with inflatable seatbelts

• Rear-Facing Maximum Weight Capacity for UAS Installation: 30 lbs (13.6 kg)

• Forward-Facing Maximum Weight Capacity for UAS Installation: 35 lbs (15.8 kg)