How to Use: These shirts are perfect for casual outings. You can pair them with jeans for a laid - back look or with khakis for a semi - formal style. Just put it on like any other shirt, button it up, and adjust the collar for a neat appearance. Attention: Always check the size chart carefully before buying as different brands have different sizing. Also, be aware that color may vary slightly from the screen due to display settings. Maintenance: You can machine wash these shirts in cold water with similar colors. Use a gentle cycle to keep the fabric in good condition. Avoid using bleach as it may damage the polyester and spandex blend. Tumble dry on low heat or hang them to dry to prevent shrinking.