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Boosters & Harness-2-Boosters FAQs

• How should the V-Shaped Tether be stored?

  When the V-Shaped Tether is being used to install the child seat in your vehicle, any excess webbing should be secured in the attached elastic strap. When it is not being used to install the seat in your vehicle, it should be stored in the pouch on the back of the child seat. To avoid damage or injury, be sure that any excess webbing is contained within your vehicle at all times.

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

  Booster seats differ from a harnessed car seat in that a booster seat, by definition, simply “boosts” the child up so that the vehicle seat belt is positioned correctly across the child’s hips and shoulder/middle of the chest. Booster seats rely on the vehicle seat belts to hold both the child and the booster seat in position.

  Harnessed seats have an internal 5-point harness system that is used to restrain the child.

• Why can't I use my Britax harness-2-booster until my child is two years old and 25 pounds?

  The Britax harness-2-boosters were released with a 25 pound/2-year minimum requirement because we do not want to promote facing children forward too early, i.e. moving your child from an infant car seat directly into a forward-facing seat like a harness-2-booster. Our recommendation would be to transition your child from an infant car seat to a rear-facing convertible car seat in order to remain rear-facing as long as possible.
  

• What is the purpose of ISOFLEX Flexible Lower LATCH Connection System on a belt-positioning booster seat?

  The ISOFLEX Flexible Lower LATCH Connection System secures the booster seat to the vehicle, preventing it from becoming a projectile when not in use, and stabilizing it during a crash.

• Why do I need Lower Connectors/Universal Anchorage System for a booster seat?

  A belt-positioning booster seat with lower anchors/ Universal Anchorage System secures the booster seat to the vehicle, preventing it from becoming a projectile when not in use, and stabilizes it during a crash. The majority of caregivers do not secure their unoccupied booster seats to the vehicle seat, thus allowing the booster seat to become a projectile in the event of a collision.

• Can I recline the Britax Harness-2-Booster seat when in booster mode (without the harness)?

  No. The Britax Harness-2-Boosters were tested and certified in the upright position when in booster mode. Do not use recline in booster mode.
  

• The harness-2-booster user guides say that I can use the LATCH in booster mode from 40-120 lbs. How is it that I can use the LATCH beyond the vehicle’s LATCH anchor weight limit?

  When using the harness-2-booster in booster mode, the vehicle seat belt is restraining the child and, in the event of a crash, the crash forces are applied to the vehicle seat belt. When used in Booster mode, the LATCH system is only offering stability and restraining the seat when not in use and does not bear the load during a crash. Therefore, it does not contradict the maximum capacity rating of the lower anchors by the vehicle manufacturer.
  

• When can I move my child from a harnessed seat or booster seat to the vehicle seat belt?

  According to the National Highway Traffic Safety Administration (NHTSA), it is best for children to continue to use a forward-facing car seat with a harness and top tether in the back seat until the child has reached the maximum height and weight of the forward-facing harnessed car seat.

  Requirements for car seat use vary depending on the state or province in which you reside. Britax recommends that you follow the laws of your state/province as the minimum requirements for restraining your child while traveling. Additionally, Britax recommends that you continue to use the child seat system - convertible car seat, harness-2-booster (combination) seat, or booster seat - to the upper limits of its recommended use. To be able to fit an adult seat belt, Britax recommends that a child must:
  

  • Be tall enough to sit without slouching with his/her back and buttocks against the vehicle seat back

  • Keep his/her knees completely bent over the front edge of the vehicle seat with his/her feet flat on the floor, AND

  • He/She must be mature enough to stay seated properly

  Also, the vehicle seat belt must be positioned correctly across the child's hips and shoulder/middle of the chest.