Any boot that can actually be resoled. You might pay a higher up front cost, but they will be worth the investment when you’re putting your third outlsole on them in instead of getting yet another pair of shoes.
Edit: also, the AK isn’t actually cheap to make, it’s just the US market was flooded with surplus guns no one wanted for a good while.
The “focal length” of our eyes is a subjective number, because our retinas aren’t flat and our attention doesn’t cover our whole field of view at the same time.