Under normal circumstances, the NB number of diapers can be used from birth to weight about 5 kg, to one month after birth is no problem, of course, this situation also depends on the brand of diapers, different brands of diapers waist and leg circumference design is not the same. To combine the specific circumstances of the child, for example, some children are born with a relatively large weight, belonging to the huge children, this situation NB number of diapers with the time is certainly to be short, premature babies with a relatively long time. So NB number of diapers do not hoard too much, according to the child’s birth and later weight growth and then buy on, diapers to choose soft, breathable good.