The Bib for Baby Carrier One protects the upper part of the baby carrier so that you won't have to wash it as often. The bib has a soft, waterproof and breathable terry cloth surface that feels comfortable against the baby's mouth and cheeks. The material is guaranteed to be free from harmful substances. All fabrics used in this product are safe to chew or suck on. They have been tested and approved in accordance with Oeko-Tex ® Standard 100 Class I. This means that the textiles are free from health-hazardous substances and allergens.