It is made of organic GOTS certified 100% cotton muslin fabric. Muslin covers can be used in the stroller, car seat, baby carrier, bed, play mat, at sea, after bath and as a breastfeeding cover. It can be used in 4 seasons with its breathable structure that does not cause sweating. The patterns on the fabric are produced with organic dye and are suitable for skin contact. It does not contain chemicals harmful to baby skin. It has a soft texture for babies' sensitive skin and gets even softer after washing. It is recommended to wash at 30 degrees.