Look for a backpack with wide, padded shoulder straps. Too little padding can cause shoulder pain and bruising. The type of padding is also important, as soft foam has a tendency to pucker, resulting in hot spots. Ideally, the backpack should have a connecting strap that attaches to and between the shoulder straps. You should be able to quickly and easily open, close, and adjust this strap.
Choose a backpack with a waist belt. Waist belts are essential if you plan to carry a heavy load, as they reduce the amount of strain on your shoulders and back. A wide waist belt that cups over your hipbones is ideal, as this type of waist belt maximizes the weight-bearing surface area of the belt for a more even load distribution.
Make certain the backpack you choose includes a back panel made of cooling material, especially if you will be using the backpack for long periods or in the hot sun. Cooling back panels draw heat away from your back, preventing heavy back sweating and associated chafing.
Search for water resistant backpacks. Backpacks made of water resistant material will protect your belongings from damage caused by rain or excessive sweating. Typically, this type of material is easier to clean and dry, which makes washing your backpack during extended trips considerably easier.
Select a backpack that includes a framesheet across the back. Framesheets, which are generally made of polyethylene, are designed to stiffen the back and improve weight transfer. Framesheets also prevent sharp objects from poking through the backpack.
Determine the type and number of items you plan to carry in your backpack, and then look for a backpack with the appropriate amount of compartments and pockets. Zippered compartments are often more secure and convenient, but have a tendency to break when under pressure for extended periods. Consider this when selecting your backpack.
Try on and test any backpack you like before you purchase it. Comfort is possibly the most important factor when choosing a backpack. The pack should fit snugly, but comfortably, and the straps should remain on your shoulders when moving around. If the pack feels uncomfortable or too bulky, continue shopping for one with a better fit.
