How to use: Just put on the T - shirt and you're ready to go for any activity, whether it's working out at the gym or lounging at home. Notice: Make sure to check the size chart carefully as it has a slim fit and runs 1 - 2 sizes smaller than regular. Also, be aware that the color you see on your monitor might be a bit different from the actual shirt. Maintenance: You can machine - wash this T - shirt in cold water. It's recommended to use a gentle cycle. Tumble dry on low to keep it in good shape.