With a backpack you can easily carry something with you without you noticing that you have something with you. You keep your hands free, after all. Backpacks come in different materials, colors and sizes. There are ecological backpacks of recycled materials such as banners, fire hoses and jute bags. These backpacks come in different colors. There are also waterproof backpacks which is of course very useful if you ride or to walk in the rain. You can tune the size of the backpack perfectly on your use so you do not too much carry.