Xiaomi Casual Daypack Backpack – Black Full description Xiaomi. The Xiaomi Mi Casual Daypack is perfect for school or study life or just as an everyday carry-on backpack. It comes with a large 10L capacity which is big enough to store your books, tablet, camera or other small devices or gadgets. It has enough space for your important documents or possessions as well such as your wallet, bus cards, earphones or charging cables. Its made from 100% Polyester that has a water resistance level of 4 and also features strong and abrasion-resistant YKK zippers. The outside also has 3 additional pockets for anything extra you might want to bring along on your journey. Its compact and lightweight design make it easy to carry with you all day long. The Daypack is designed for the essential items that you use on a regular basis during the course of the day. Available in a variety of vibrant colours, the Daypack can also be used to express yourself and compliment your fashion.