In general, thread the crotch strap through the slot closest to your child’s body, but not underneath your child. Check the instructions for your specific car seat to determine which adjustment positions are appropriate for rear-facing and forward-facing use. Check your instruction manual, as some models may use only the rear two slots for rear facing infant mode.
WARNING: Failure to place buckle’s metal retainer completely through pad and plastic shell can result in serious injury or death.
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