These nappies have been designed for very small or premature babies below 2.5kg. The material is extra soft with a flexible fit and leakage barriers to prevent leakage. These specially shaped nappies have been designed to release pressure from the delicate belly button. The change indicator transforms from yellow to blue when it is time to change the nappy. The breathable material keeps the babies delicate skin dry and soft. The stretchable sides and waist band hug the baby's waist softly for a more comfortable and secure fit. The super absorbent core prevents leakage.