So in an effort to think up more sustainable footwear, I stumbled upon a concept of a sandal that goes over shoes. This was being marketed towards "sneakerheads" I think, or people with nice shoes. My use case thought with this design would be, you put on the "sandal" to walk some distance (maybe you need to walk a mile each way to an event) and then you take them off for light walking arount at a destination. This would allow the "sandal sole" to be worn out faster than the shoe itself.
I've looked in to the idea of "resoling shoes" but this looks complicated. So I was wondering instead if you could just have a sole that attaches as a sandal (sandal sole) that could be disposed of or reused when it gets used up. Or you could design shoes this way where the sole attaches like a clip in sandal so they're easily replaceable.
Redundant concept? Not useful? Got an alternative idea?
I figured out that I could basically make a sandal out of rubber or like a car tire which would last hundreds or thousands of miles, that could fit over a shoe. Saw someone else say they glue soles to their shoes rather than replacing a sole (so two soles), then replace the second sole when it weara out, so pretty much same concept. Some people run or walk with the sandals alone so I don't imagine putting it over a shoe would be extra harmful. apparently something in shoes collapses and becomes useless (midsole) as a shoe even if the sole is intact. but if people are basically using the sandal / sole alone, logically it seems equivalent to use an overused shoe with the sole. or to figure put a way to replace midsoles then (but again, people use the sandal or sole alone without midsoles, so I'd think it is equivalent - if not, just cut the botton of a shoe out and put the sandal around it that way I guess - the goal over a sandal would be some protection of the top and sides of thd feet).
It's a really simple topic, just kind of weird to me there isn't more thought on it or the solutions haven't been as attempted or implemented in society.