This hoodie is super easy to use. Just slip it on whenever you want to look cool and feel comfortable. When it comes to sizing, remember to order 1 - 2 sizes bigger than your normal one as our international sizing is smaller compared to the USA standard. Check the size chart for the best fit. For cleaning, you can use your washing machine. Set it to a cold - water, gentle cycle and use mild detergent. After the wash, just hang it up to dry. Keep in mind that the measurements are not 100% exact and there might be a little difference. And don't be surprised if the color on your screen looks a bit different from the real hoodie because of monitor settings.