My mom bought my backpack 25 years ago and the clerk told her "they'll last for at least five years".
Well I still use mine daily, so yeah. Definitely lived up to expectations. Although I've did get it fixed, but first time just a year or two ago. So lasted without any fixing for longer than the average age on Lemmy, I'd say.
I bought a laptop backpack a loooooooong time ago, and still use it constantly. It's been through 3 laptops, and I'm not the type to upgrade until it is absolutely necessary.