Use the upper height position for newborns (at least 8 lbs / 3.5 kg) so your baby is carried in the correct position close to your face. (babybjorn.eu)
Your child should use this seat till the age of two or till they reach the upper height and weight limit of the seat, as described in the owner's manual. (newkidscenter.com)
The baby carrier is delivered in the upper height position, which is for newborns. (babybjorn.ca)