Delivery fast. It is easy to understand the use of simple. The main thing is to adjust for yourself. The fabric is pleasant, the straps are firmly sewn. I know that using only after the child sits down. But I'm not going to use it all the time. The child is 4,5 months old and weighs more than 7 kg so sometimes for half an hour it is possible and unload my back. Hardly a child needs a sick tired mother.