Carrying children in the back of a kangaroo bag during a hike or a day trip is not comfortable for all parents. That's why the company fillikid developed its back carrier, which allows parents to carry their child in the back rather than the front, which is much more comfortable and healthier in the long term. You can place your child in the back carrier from the age at which they are able to sit upright without help. This model has an ergonomically shaped seat, the length of which can be adjusted to the size of the growing child. However, as the child not only grows taller but also wider, the manufacturer also made the width of the seat adjustable. To prevent the child from falling out, the development company also fitted this model with safety belts that can be easily fastened by the parents. Two shoulder straps and a chest strap are also provided for the parents.