AcornMen's Spa Slide Slippers with Adjustable Strap and Soft Terry Lining

Are these machine washable?

I am a woman who wears a size 10 shoe with a wide width. What size in the men's Acorn spa slides would be comparable?

Will this fit a swollen eee (4e) foot? thanks.

What would a men’s size 8 be in the slipper? Manufacture list it would be a small size chart lists medium