We recommend that the back position is used from approx. 11-12 months. Under no circumstances should the back position be used before the child can sit upright unsupported and in full control of his head, which normally happens at no later than 8 months. The back carry position is mostly used when your child feels too heavy, which obviously is a very individual assessment. Our user experiences show that the Moova baby carrier's crossed and well-padded shoulder straps provide such good support that many parents continue with the forward position until their child is two years old.