These printed men's jogger pants are super easy to use. Just put them on like any other pair of pants. The drawstring closure allows you to adjust the waist for a comfortable fit. When it comes to sizing, remember to check the size chart carefully because different suppliers and brands may have different measurements. If you're used to US sizes, follow the example in the product description to choose the right Asian size. For maintenance, these polyester pants are pretty low - maintenance. You can machine - wash them on a gentle cycle. Hang them to dry to keep their shape. Avoid using harsh detergents as they may damage the print. With proper care, these jogger pants will last you a long time and keep you looking stylish during your workouts or casual outings.