bamboo fiber/polyester/spandex Machine Wash Material: The Long Sleeve Dress Shirt is made of bamboo stretch fabric that provides comfort and flexibility, making it suitable for both formal and casual occasions. Style: The shirt features a Windsor collar that gives it a formal look, making it ideal for business meetings and other formal events. Occasion: Business/Wedding/Party/Dating, whether for formal occasions or daily casual. It can be paired with a suit for formal events or worn with jeans for a more casual look. Also an ideal gift for family, lovers and friends. or daily casual. It can be paired with a suit for formal events or worn with jeans for a more casual look. Also an ideal gift for family, lovers and friends. Long sleeve: With long sleeves, the shirt can be worn in any season, and the solid color gives it a classic and timeless look. You will get good answers from us, any problems about the products please feel free to contact us, Thanks!