[Yarnie.One]

I agree.... Scotchguard OR the waterproofer that you spray on your shoes will help protect the backpack from stains.

Use Scotchguard in a well-ventilated area and only spray a little at a time while you hold your breath. Step back and take a couple of breaths before going back to it and spraying more. Let it dry well before handling the item.

It has carcinogenic chemicals in it.