Shirt and pajamas Short sleeves. Comfortable waistband, belt detail at the waist Soft and breathable fabric texture With its soft fabric, for those who want to be comfortable at home and look stylish, the pajama set contains 100 cotton. Cotton is a natural fiber Made of pure cellulose. Cellulose is an organic substance created by synthesis in nature. It has low elasticity and moisture. It absorbs well and keeps you cool by moving the heat out of the body. Care Instructions Wash at 30°C maximum. Do not tumble dry. Do not use bleach.