The pique and muslin in this product are made of 100% Cotton. Double-sided pique and muslin are breathable fabric - it does 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 blue sun patterned double-sided muslin pique is 100x100cm. With its soft texture, double-sided muslin pique is suitable for multi-purpose use such as stroller cover and crib cover.