Men’s messenger and shoulder bags are available in a number of styles and construction materials. Here is an overview of what to look for when buying a shoulder or messenger bag.
Leather - Leather is a very durable material that will be able to withstand the wear and tear that is inevitable for a messenger or shoulder bag. Leather also provides a classic worn look. Make sure that the leather is well tanned. You can purchase bags that are made from full-grain and top grain leather, with full-grain being the strongest.
Rubber - A rubber bag will provide you with water resistance and will provide a higher measure of flexibility than a leather bag. However, rubber bags tend to not be very vulnerable to high temperatures.
Nylon - Nylon is a versatile, hardy and lightweight bag material. It is also water-resistant and can look very fashionable.
Canvas - The woven fibers of a canvas bag ensure a good level of durability, water-resistance, and flexibility. Canvas bags are also lightweight. Plain canvas blends well with colours to provide a wide range of colour options.
Closure - A double enclosure will provide greater protection for your bag’s contents than a single enclosure. The main compartment should be closed by a zipper. A flap enclosure will provide protection from the elements. If you decide on a flap enclosure, look for a bag that has a magnetic button as well as a snap closure system.
Interior - Look for a bag with a padded interior. It should have compartments to store such electronics as your laptop, camera, and iPad. A blend of plastic and fabric interior will be the most durable. Interior linings that are made from nylon are the strongest.
eBay offers a full selection of men’s messenger/shoulders bags in all materials and styles.