The majority of child car seats with in-built harnesses feature multiple shoulder strap slots to allow you to adjust the harness as your child grows. In forward facing car seats, you should use the closest slot to your child’s shoulders, but never more than 2.5cm above or below your child’s shoulders. Ensuring that your child's harness is always adjusted to the correct height, can help prevent a loose harness fit, improve shoulder strap placement and prevent discomfort (and discourage...
