macpac / Macpac koala / Koala Baby Carrier Backpack Size: Capacity: 6L / ST size / Back Length: 50cm *With scratches Please note: *Macpac child carriers are suitable for children approximately 6 months old (after they can hold their head up) to approximately 4 years old (approximately 20kg). *Child carriers are not designed to stand on their own. Never leave a child unattended while they are seated in the child carrier, as there is a risk of tipping over.