You can wear this long sleeve shirt any time you want. For a casual look on weekends, layer it with a jacket or sweater. When it's for work or a formal event like a wedding, pair it with a nice pair of trousers. When washing, use a gentle cycle in cold water to keep the fabric in good condition. Avoid using harsh detergents as they may damage the eco - friendly material. After washing, air dry it to maintain its softness and shape. And don't worry too much about wrinkles, as the shirt has a natural, relaxed look.