To use this shirt, simply put it on like any other button-down shirt. You can tuck it in for a more formal look or leave it untucked for a casual style. When it comes to washing, follow the care instructions on the label. Usually, you can machine wash it in cold water with like colors. Avoid using bleach as it may damage the fabric. After washing, tumble dry on low heat. This shirt is designed to last, but to keep it in top condition, try not to over-stretch the fabric, especially around the underarm gusset area. Enjoy the comfort and functionality of this shirt for years to come.