Using this hoodie is simple. Just put it on and enjoy the comfort. You can use the front pockets to keep your hands warm in cold weather or carry small things like keys or your phone. When it comes to sizing, remember to order 1 - 2 sizes bigger than your normal size as the international sizing is smaller. As for maintenance, machine wash it in cold water on a gentle cycle with mild detergent. Then hang it to dry. Also, don't be surprised if the color looks a bit different on your screen, and there might be a small measuring error due to hand - measuring.