This is one of those few times where Mike is absolutely right.

5.10 is probably the best known but other mountain bike specific shoe are included. They are absolutely not equivalent to a running or walking or hiking shoe.

Sure they aren't clipless but shape and type of rubber matter a lot. Leatt, 5.10, Fox, companies like that. House brands like Bontrager and Specialized also make them but I would go with the real thing for the same price first.

Unparallel has a lot of the 5.10 designs from before 5.10 got swallowed by Adidas. Keeping their shoes in stock seems to be a challenge so I've never managed to try them on. Too bad.

I still don't think stretching a pair of Free Riders would be a problem. I only say that because I have a pair and I've stretched them.