RECOMMENDED AGE 0M + In pure natural cellulose A super absorbent and soft sponge The ultra absorbent sponge is made of pure natural cellulose, known for its high capacity to absorb water. Once immersed in water, the sponge will be soft and extremely delicate for your baby's skin. Before and after each use, always rinse the sponge with cold running water. After use, squeeze gently and leave to dry in a well-ventilated place.