Using these harem jeans is easy. Just put them on like you would with any regular pair of jeans. For a night out, pair them with a nice top and some heels. When running errands, you can team them up with a casual t - shirt and sneakers. When it comes to maintenance, it's best to wash them inside out in cold water to preserve the color and fabric quality. Avoid using harsh detergents. Hang them to dry to prevent shrinking. As for sizing, remember that due to different suppliers and brands, each item may have its own size chart. So check the size chart carefully before you order. For example, if you usually wear an S in US sizes, you might want to choose an L in Asian sizes.