This T - shirt is very easy to use. You can simply put it on for your daily activities, exercise, or relaxation. When it comes to size, remember our shirts have a slim fit, so be sure to check the size chart before you purchase. As for color, the actual color might look a bit different on your screen because of the monitor settings. When measuring, there could be a small error due to the hand - measuring method. To maintain this T - shirt, it's recommended to follow the washing instructions on the label. Usually, a gentle machine wash with cold water and mild detergent is a good choice. Avoid using bleach as it may damage the fabric. After washing, hang it to dry to keep its shape.