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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 are the weight and height limits for rear-facing mode with the Britax One4Life Slim?

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

• What are the weight and height limits for using 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 - 124.5 cm).

• Can I use the LATCH system on my One4Life Slim for a child weighing more than 40 lbs.?

  Do not use the lower anchors of the LATCH system to attach this child restraint when restraining a child weighing more than 40 lbs. with the internal harnesses.

• When can my child use the Britax One4Life Slim in booster mode?

  Use in booster mode only with children who weigh between 40 and 120 lbs. (18.14 to 54.43 kg) and whose height is between 44 and 63 inches (111.8 and 160 cm). Britax strongly recommends children should ride in harness mode until they exceed the weight or height limits specified.

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

  The rear-facing mode can be used for children weighing between 5 and 50 lbs. (2.3 to 22.7 kg) or until the child’s head is 1 inch (2.54 cm) below the top of the headrest. The height range for rear-facing mode is from 18 to 49 inches (45.7 to 124.5 cm), ensuring that the child remains within the safety limits for optimal protection.

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

  Use the forward-facing harness mode for children who weigh between 22 and 65 lbs. (9.98 to 29.5 kg) and whose height is 49 inches (124.5 cm) or less.

• What are the weight and height limits for booster mode on the One4Life?

  The booster mode is suitable for children who weigh between 40 and 120 lbs. (18.14 to 54.43 kg) and whose height is 44 to 63 inches (111.76 to 160.02 cm).

• How should the harness straps on the One4Life be positioned in rear-facing mode?

  The harness straps should be positioned at or just below the child’s shoulders. The top of the child’s head must be at least 1 inch (2.54 cm) below the top edge of the headrest.

• How should the harness straps be positioned in forward-facing mode on the One4Life?

  The harness straps should be positioned at or just above the child’s shoulders. The top of the child’s ears should remain below the top of the headrest.