There's a huge difference. Wear and tear are not usually covered in warranties. You got lucky.

I think you maybe confusing the definition of the warranty. May want to check each of it's terms and conditions. I feel you got lucky with herschel. You got two backpacks for free.

Pelican MPB35 might be a contender. But you'll probably have better success finding a solution at r/backpacks since the people there have more experience.

If you want to go with an Aussie company, I've loved my Crumpler. Held up for 15 years of daily use. They're hard to get here in Europe, but should be super easy for you!

Just remember, most “lifetime warranties” are not your lifetime. It’s the expected lifetime of the product.

With that said, can you get Duluth Pack down under?

I’ve got a Deuter Futura 22L that I daily drove for YEARS in the city, backcountry, road trips, you name it. It’s dirty, sure, but structurally it’s the same as the day I got it. I broke a couple of the buckles and Deuter sent replacements without batting an eye. I think my favourite part is that the fabric can withstand a light rain without the contents getting wet, but then for a downpour it has a built in rain cover that folds out of a flap on the bottom. The only reason it’s not my daily anymore is that I just felt like switching to a less rugged bag to save some weight on my bus commute - if I was still walking every day I would still be using the Deuter for the spinal support.

If you need something bigger, I can also recommend Osprey. I’ve had one of their 60+12 (the 12 is a detachable daypack) mountaineering packs for international backpacking since 2017 and it’s held up great. And I was a migrant fruit picker back then, and NOT gentle on my gear at all. I haven’t had to test the warranty yet, but Osprey are legit and you’ll see them mentioned in this sub often.

A true buy it for life that I would be surprised to ever see break is the Finnish company Savotta

So, you don’t need backpacking capabilities, just EDC/travel, correct?

What size works best?

What’s available locally? Will/can their warranty be handled through a shop?

Osprey has a terrific lifetime warranty that covers normal wear and tear but their packs aren’t very fashionable. They make awesome travel and hiking backpacks, though.

Go to REI. I picked up an osprey. It's the best backpack I've ever owned.

"Buy it for 4 years"

I don't mind a good warranty, but I primarily just prefer products that last long in the first place.

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Patagonia, or Osprey if they ship to the AU