Leather backpacks are some of the most durable backpacks on the market. They are built to last and can take a lot of stress, whether by elements or by wear and tear. If you are looking for a backpack that will last you for years, then a leather backpack is a great option. Leather being a natural material which is breathable, stretchable and strong, it means that a leather backpack can withstand a lot of activities and strain without falling apart or crumbling.