Siawasey Anime Sword Art Online Cosplay Luminous Bookbag Backpack School Bag(3 Styles) After absorbing sunlight, the color of the LOGO will change in the evening as the picture shown. Size:31CM(L)*44CM(H)*13CM(W) Material:Super high quality canvas Our backpack is made by high quality canvas, it is much more durable than other general backpack. This backpack is perfect for anime Sword Art Online fans collection, hurry to start!