The pajama set has a polka-dot collar with a ruffled waist. The waistband is soft and breathable. The cotton fabric makes you feel comfortable with its soft and breathable texture. The products designed according to the ergonomics of children allow freedom of movement. All day long, it's soft and comfortable, flexible free. This product contains 100 cotton. Cotton is a natural fiber. It's made of pure cellulose. It consists of cellulose. It's an organic substance created by synthesis in nature. It has little flexibility. It absorbs moisture well and keeps heat cool by moving it out of the body. Care instructions Wash at maximum 30 degrees Celsius, don't tumble dry. Do not use bleach.