Ergonomics play a huge role in the comfort of your backpack. Look for features such as padded shoulder straps to evenly distribute weight, ventilated back panels to allow airflow and reduce sweat buildup, sternum straps to help balance the load, and compression straps to pull the weight closer to your body. Always adjust the straps to sit comfortably on your shoulders and hips. A well-fitted backpack can significantly reduce strain on your back, even when carrying heavy tech gear.