Choosing a backpack for sports
If you are looking for a backpack for running, then this already has its own characteristics. Anyone who has ever tried to run with a bag over their shoulders knows that at the slightest acceleration it starts to throw it from side to side. Therefore, for a comfortable run, it is recommended to choose a backpack that is lightweight, with a ventilated padded back and additional straps for a secure fit on the body. Such models have already defined aerodynamic properties, which reduces resistance while running while allowing you to carry a "payload". https://mysticmountainnaturals.com/how-to-pick-a-nice-beach-bag/
What should be a backpack for running:
These backpacks are tightly fixed on the runner's body and are practically not felt during movements, and weigh only 150-200 g. So an athlete with such assistants can autonomously overcome long distances.