This sweater is super easy to use. Just slip it on and you're ready to go out in style. When it comes to sizing, remember to order 1 - 2 sizes larger than your normal size for a perfect fit. For cleaning, you can machine - wash it in cold water using a gentle cycle and mild detergent. After that, hang it up to dry. Don't worry too much about the color difference; it's normal because of the monitor. Also, the small inaccuracy in measurements due to hand - measuring won't affect your wearing experience. Enjoy your new sweater!