There's a few varieties. I got really drab boring "don't bother trying to mug me for these" walking shoes and a second set that looks almost the same but with more traction and more material higher up the ankle for when it snows.

How are the inside heels do they wear down? Always the first bit to go on any shoes i use

They're so sturdy that I forgot that the inside of heels of most shoes wear down.

The shoelaces sometimes fray and fall apart but those are easily to replace.