Short sleeve. It doesn't bother you during the day. Cotton is a natural fiber Made from pure cellulose Cellulose is an organic substance created by synthesis in nature. It has low elasticity. Modal It's made from beech wood. It's a natural fabric made of beech wood cellulose. It has a first-class softness. Moisture transfer is fast. Care Instructions Wash at maximum 30°C. Do not tumble dry. Do not bleach.