Most people don’t think about ergonomics when it comes to backpacks, but it’s just as important as the capacity (maybe more important). First, make sure the size fits your body. Measure your torso length from the top of your hip to the top of your shoulder. Choose a backpack that is roughly that length or shorter. If it’s too long, it’ll hit your backside when you walk and be uncomfortable.
Always, always, always go for backpacks with padded shoulder straps. Some people may think the padded backpack straps are overrated, but they make a huge difference in your comfort. S-curve straps are also a good choice, as they help distribute weight more evenly, so it doesn’t feel like the backpack is putting all the weight on your trapezius muscle, aka the diamond-shaped muscle along your neck and shoulders.
Another feature to look for is ventilated back panels. This is when the piece of fabric that touches your back is perforated or made of mesh, allowing for better airflow. Essentially, it helps prevent sweaty backs on the days when you’re hauling your backpack all over the place.
Together, these design features can help reduce back strain, which isn't something to take lightly. Uncomfortable, poorly designed backpacks can cause serious back issues. Knowing how to pick your pack isn’t just about carrying stuff—it affects your physical health.