Using this Kamen Rider Ex - Aid backpack is super easy. Just open the main compartment to put in your daily essentials like books, a laptop, or your gaming gear. There might be some small pockets on the sides or front for storing smaller items like keys or a phone. When it comes to cleaning, you can spot - clean it with a mild detergent and a soft cloth. Avoid using harsh chemicals as they may damage the polyester material. Don't overstuff the backpack to keep its shape. Also, if you're traveling internationally, remember that there's an extra shipping fee. Enjoy showing off your love for Kamen Rider Ex - Aid with this cool backpack!