This hoodie is really easy to use. Just put it on and enjoy its cool style and comfort. When it comes to sizing, remember to order 1 - 2 sizes bigger than your normal size because our international sizing is a bit smaller than the USA standard. You can check our size chart to find the perfect fit. For cleaning, simply toss it in the washing machine on a cold, gentle cycle with mild detergent. Then hang it up to dry. Keep in mind that all measurements are approximate and there could be a small difference. Also, the color on your screen might be a bit different from the actual hoodie due to monitor settings.