The double-sided pique and muslin in this product are made of 100% Cotton. Double-sided pique and muslin are breathable fabrics that will not make your baby sweat. It does not contain harmful substances. It is suitable for use in four seasons. It is a baby blanket. 1 baby blanket is 100cm*100cm. With its soft texture, double-sided muslin pique is suitable for multi-purpose purposes such as stroller cover and crib cover.