What you do with your backpack will determine how long it lasts. Realistically, the average tree-stand bowhunter should be able to get 20 years or more out of a backpack. Typically, the packs only go from the house to the truck to the tree and back again. I certainly have backpacks 20 years old that are still usable and also weren’t as well made as the packs available today. But the rougher you are with a pack, the sooner it’ll start to break down.