To use this youth long sleeve tee, simply put it on like any other shirt. It's great for daily wear, sports, or just hanging out. When it comes to washing, use a gentle cycle with cold water to keep the fabric in good shape. Avoid using bleach as it might damage the anti-bacterial treatment. After washing, tumble dry on low. If you need to iron it, use a low - heat setting. Keep it away from sharp objects to prevent tears. This tee is designed for youth, so make sure to choose the right size according to the youth sizing chart.