For example the state of california requires that children under that age and under 57 must be adequately secured in a child restraint system. That can be anywhere from 60 to 100 pounds 272 to 454kg depending on.
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Booster seat age weight height. The state also recommends that they stay in a booster seat until they are 100 pounds in weight or 49 in height although this is not mandatory. Children between the ages of 3 and 4 who are at least 40 pounds are good candidates for booster seats as long as the lap and shoulder belt fits properly when the child is seatedthe child should be able to sit comfortably for the entire trip without altering his position by sitting on his knees or leaning forward. Dont rush through the use of booster seats either. While the age height and weight requirements vary most states require that children use car seats and booster seats from when they are born until they are around eight years old. Use a forward facing car seat until at least age 4 and until your child reaches the height or weight limit of their seat. Booster seats should be used until your child can correctly fit in the adult lap and shoulder seat belts typically when they are around 4 feet 9 inches in height and 8 to 12 years old.
Thats the height at which seat belts begin fitting kids correctly for the best protection. The american academy of pediatrics encourages parents to keep kids in a booster seat until they are anywhere from 8 to 12 years old and at least 57 inches tall. American academy of pediatrics 4k subscribers how to use a booster seat. In this state all children who weigh less than 80 pounds or are under eight years of age need to be in a booster seat or appropriate car seat.