My child’s head is higher than the Oobr booster seat’s headrest. Is the seat still safe to use?

Oobr headrest position

No. The tops of the child’s ears MUST be below the top of the Oobr booster seat’s headrest. If the tops of the ears are above the top of the headrest in the highest adjustment position, your child is too large for using this booster seat in full back mode.