Soft fabric texture with short sleeves. This product contains 97 viscose and 3 polyesters. The wide collar and shorts set is a perfect model for a comfortable sleep. It has a light fabric texture, which has a comfortable waistband for a perfect fit. Viscose is made of beech wood. It's made of cellulose, like cotton. It makes you sweat-proof and breathes. It keeps you alive. Polyester is a flowing and light fabric. It's durable, flexible and shiny. Care instructions Hand wash at a maximum of 30 degrees Celsius. Do not tumble dry. Do not bleach. Lay dry.