The classic messenger bag is perfect for a college or high school student. The bag contains a large compartment for books, folders or binders as well as a front-zipper pocket. Inside there are smaller compartments for keys, credit cards, pens, calculators and money. Eddie Bauer sells a classic messenger bag that can be personalized with your initials. It's made of heavy nylon to withstand vigorous travel.

Shoulder messenger bags can be horizontal or vertical in orientation and range in sizes from netbook-size computers to 18-inch desktop replacements. The inner compartment is padded and may come with a separate sleeve to provide additional protection. Laptop messenger bags have inside and outside pockets and compartments for accessory storage.

The messenger bag is perfect for any man because it comes equipped with features such as a zippered laptop compartment that opens quickly for airport screening. With its black and gray color options, the appearance is appropriate for men. The shoulder strap is adjustable and has padding for extra comfort. The extra pockets in this bag are great to easily store cash, cell phones, PDA's or MP3 players.

Waterproof messenger bags are ideal for travelers. If you take along a laptop or other electronic devices, a waterproof bag protects the contents from inclement weather. Most waterproof bags are made of high-quality 100% durable polyester.  This bag comes with plenty of storage in the main compartment along with grid-textured nylon and a waterproof backing to protect the contents.