Using this O - Neck Geometric Printed T - Shirt is super easy. Just put it on and you're ready to go for any casual or weekend event. When it comes to choosing the right size, make sure to check the size chart carefully as different suppliers and brands may have variations. As for maintenance, since it's made of cotton, you can machine - wash it in cold water. Use a gentle cycle to keep the fabric soft and the geometric pattern intact. Avoid using bleach as it may damage the print. After washing, tumble dry on low heat or hang it to dry. With proper care, this T - shirt will stay in great shape for a long time.