YOYOSHome Anime Hatsune Miku VOCALOID Cosplay Luminous Messenger Bag Backpack School Bag After absorbing light, the color of the logo will change in the evening as the first picture shown. Material: Super high quality durable Nylon fabric Dimensions: length 13'' * height 17.3'' * width 5.9'' Normal the shipping time is about 7 to 14 working day to US by USPS KINDLY REMINDER:We will send you a shopping bag of our store's Logo together with this anime backpack as a gift for you, You can refer to the last picture.