A messenger bag is easy to carry in your laptop or tablet. A messenger is often lighter and more compact than a laptop. A messenger you use often if you have a laptop. Therefore, you want something to wear what suits you, what is special. A messenger with a story. There are eco-messengers that are made from recycled materials, or fair trade messengers. But there are also waterproof messengers so that your belongings remain dry and you avoid unpleasant surprises.