Is this a ‘i was gunna throw them out anyway so let’s see what happens’ ?

I think it was more like 'hey, you have the same kind of shoes I do, only smaller. Can I borrow one of them for a minute?' Canvas shrinks; rubber doesn't.

After a trip where my clothes got really dirty I decided to wash everything in higher temperature. Turned temperature handle to max without even looking what temperature it was at.

Clowns hate him.

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That spongy “crocs” material has sprung up in every brand over the last decade.

90°C !!!

Nike Air Min

Do you mean the right one that's the left one or the right one that's on the left?....

Why did you wash at 90°C, I don't even wash bedsheets at 90°C

Seeping plastics into our bodies... that's all I can think of when I see that spongy crocs material.

I’m pretty sure it’s the shoe on the right. I’m guessing that it was so hot that it caused the plastic to sort of shrivel up. The real question is why didn't OP wash both shoes together?

I believe the term is 'melted'.

I did wash both. I bought another pair after incident and compared to it.

That's too funny! I can imagine you looking at them when they were done with the wash. Did you realize at first how much they had shrunk or did you only realize after you tried to put them on?

I am questioning whether it might be a perspective thing... Is the left shoe just closer to the camera?....

The soles are tied up next to each other and one is about an inch shorter. You can also see the thickness of the soles is different. Not a prospective thing.

I think the shrinkage in the right (left) shoe can be arrived at using the simple formula of perspective ÷ sarcasm.....

You can see the Nike logo looks super messed up on the smaller one.

They looked smaller, but did not think much of it. Fully realized what happened when I try to put them on lol. The actual size difference became clear only when I got new pair.

That was the scenario I was imagining when I said it was funny. Thanks for sharing.

Rubber shrinking was surprising part for me too, I give you that. As you can also see there's some glue residue on right shoe. Sole got mostly separated from canvas

The sole can get separated from the canvas without shrinking, simply because the glue softens with heat. That being said, your post is more believable after reading other comments that give more detail, like that the soles are likely made of Croc material, not rubber, and that you washed both your shoes and the large one in the pic is a new replacement.

Those details make a big difference for a couple of reasons. It explains why the tread on the smaller one looks much more worn (something that doesn't happen with shrinkage). And washing only one shoe indicates that it made it into the laundry by accident and if it was an accident and made of Croc material, it would have been highly noticeable and removed when transferring clothes to the dryer because the hot water actually stretches them and waterlogs the soles which would make them bigger and heavier. And if you had noticed and put it in the dryer anyway, you'd at least be aware that it's only the dry heat of the dryer that shrinks them, not the water temperature.

Anyway, wash your new shoes in room temperature water by hand and let air dry. Putting any kind of shoes in hot water or a hot dryer will damage them.