Support

All FAQs

• Where can I locate the Date of Manufacture and/or Expiration Date on my car seat?

  The Date of Manufacture and Expiration Date for your Britax® car seat can be found on a label located on the seat itself. Typically, this label is placed under the seat, on the side, or on the back of the car seat shell. Refer to your car seat manual for the exact location.

• When does my car seat expire?

  The expiration date for your Britax car seat is generally 6 to 10 years from the Date of Manufacture, depending on the model. Refer to your car seat manual for the exact timeframe. It’s important to discontinue use of the car seat once it reaches its expiration date to help ensure your child's safety.

• Why do car seats have expiration dates?

  Expiration dates help ensure that your child is always using a car seat that meets current safety standards. Materials such as plastics and foams can degrade beyond the expiration timeframe, reducing the seat's effectiveness in protecting your child. Additionally, safety standards and technologies evolve, meaning an older seat may not provide the same level of protection as a newer model.

• What is the difference between a harnessed seat and a booster seat?

  A harnessed seat has an internal 5-point harness system to restrain the child, whereas a booster seat “boosts” the child up so that the vehicle seat belt is positioned correctly across the child’s hips and shoulder/middle of the chest.

• Why can't I start using my Britax® harness-2-booster seat until my child is two years old and weighs 25 lbs. (11.3 kg)?

  The minimum requirement is set to avoid promoting forward-facing too early. It’s recommended to transition from an infant car seat to a rear-facing convertible car seat before using a harness-2-booster.
  

• When should I switch my child from forward-facing harness to booster mode in the Britax harness-2-boosters?

  Best practice states that children are usually ready for belt-positioning booster mode when they outgrow the height or weight limit of their forward-facing harness—typically around 65 lbs or 49 inches tall.

• What are the minimum requirements to use the Britax harness-2-boosters in belt-positioning booster mode?

  Your child must weigh at least 40 lbs, at least 44” tall, and be mature enough to sit still and upright for the whole ride. Check your car seat manual for any additional requirements. 

• How can I tell if my child is using their booster seat correctly with the vehicle seat belt?

  The seat belt should:

  • Sit low across the hips, not the belly
  • Rest across the chest and on the shoulder, not the neck
  • Allow your child to sit all the way back in the booster with knees bending naturally at the edge and feet touching the floor

   

• How do I know if my child is ready to stop using a booster seat and use the seat belt alone?

  Your child should be able to: 

  • Sit all the way back against the vehicle seat
  • Bend knees comfortably at the edge of the seat
  • Keep feet flat on the floor
  • Have the lap belt rest low on the upper thighs (not the stomach)
  • Have the shoulder belt lie flat across the chest and touch the collarbone

• When can my child stop using a booster seat?

  Your child can ride without a belt-positioning booster when the vehicle’s seat belt fits correctly without the booster—usually around 4'9" tall and between 8–12 years old. 
   

• What are the weight and height limits for the Britax® One4Life® Slim in rear-facing mode?

  Use rear-facing for children who weigh between 5 and 50 lbs. (2.3 and 22.7 kg) and whose height is 18-49 in (45.7-124.5 cm).

• What are the weight and height limits for the Britax One4Life Slim in forward-facing harness mode?

  Use forward-facing with a harness for children who weigh between 30 and 65 lbs. (13.6 and 29.5 kg) and whose height is 35-49 inches (88.9-24.5 cm).