Using reusable diapers can be successfully started from the first days of a newborn baby. The covers in the newborn size are designed for newborns weighing approximately 3-7 kg. They are equipped with a system of adjustable naps, so as to best fit the diaper on the baby - both in length and width. To go with the cover, you wil need an absorbent insert, a fitted diaper, or a flat terry, which is placed inside the cover. The great advantage of the cover is the double elastic gussets sewn in around baby's legs so that the diaper is almost leak-proof. They dry very quickly. Just a few hours after washing, you can use them again. 4 covers are enough for day use.