Is this shoe a women's or men's shoe? I would like to buy a pair to fit a men's size 10.5

When I ordered it was under men's, so I ordered an 11 (I'm a 10.5). When I got them, the description said women's. I looked up the listing and it said that for women, to order 1 to 1.5 sizes down. They are the right size for me (men's 11).

I plan o leaving these in the trunk of my car to change into when i get off work but it's extremely hot here,triple digits, will they melt in my car?

I live in Arizona and my current pair is on year 3. I keep them in the back seat of my car to take my boots off before heading home. So all day long mine are cooking in my ride and all night long I'm wearing them.

Could someone measure the bottom of the sandal from top to bottom? Because I seem to be getting sizing wrong

I returned my size 8 for a size 7. My normal shoe size is a women’s 8.5. The size 7 sandal measures about 10.5 inches from toe to heel. Hope that helps.

Do these come with arch support?

There is a small amount of contouring in the layout of the nubs, but if one is in need of serious arch support these may not be the sandals for you. I’m flat footed and I do notice the mild arches, but they aren’t anywhere near a corrective level.