Talk to any Aussie tech workers you know and chances are they or their friend has a Crumpler backpack. (No affiliation just a big fan).

Originally created by a bike courier who sick of bags breaking sewed a bag out of the toughest material he could get, marine canvas. To this day they make somewhat indestructible, well designed, trendy well loved bags.

Also they have a lifetime warranty and repair policy that is very hard to beat. Maybe you’re not local, but you can tell these will be well made (and they really are)

https://www.crumpler.com/pages/repair

Not sure if they ship to the US. But worth a look if you are serious about excellent well made well design backpacks.

https://www.crumpler.com/collections/backpacks

I know so many Aussie tech folk who swear by the Crunpler Entity as their laptop bag of choice.

https://www.crumpler.com/products/entity?variant=44393825992...

I picked up a Crumpler Brazillion Dollar Home bag about a decade back to carry all my photography gear, as there were no other bags on the market that would allow you to pack a large format monorail camera in them.

That bag is built like a tank. Still ticking along, a little scuffed up, but zero issues. If you're carting around a few thousand dollars worth of delicate gear, it definitely offers some serious peace of mind.

I bought Crumpler messenger bag about 15 years ago (in San Francisco when they still had a store there). Can confirm it’s indestructible. I’m glad to hear they’ve kept up their standards to this day!