Casual backpacks are mostly fashionable, dynamic, and refreshing models. They can highlight cute, youthful and vibrant backpacks. For example, the retro backpack on the right is a popular element. Most backpacks use the backpack. This element, this type of backpack is not only fashionable, but also better to take clothes, almost all the informal dress style of wild, stylish color hit the whole add a touch of fresh taste.