By the time of wearing it in a backpack, the child must independently hold his head for a long time, and be able to freely spread his legs. But the child does not have to be able to sit independently.
We recommend using our ergonomic backpack when your child weighs 7 kg (after 4 months).
The child's weight is evenly distributed over the bottom, thighs, and back. This position is recommended by orthopedists and is safe for babies who are not yet able to sit on their own.